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Nonfiction
- Outermost: The Art + Life of Jack Gaughan (2010) with Luis Ortiz
- One More Time (1978)
- The Wind from the Seven Suns (1981)
- [John W. Campbell Appreciation] (1971)
- An Apprenticeship: Artist (1994)
- Everything You Wanted to Know About the Elements of Style (1974)
- Gaughan by Gaughan (1969) with Richard A. Lupoff
- Gaughan on Robinson (1978)
- Hannes Bok (1968)
- I Don't Like My Hand (1969)
- Letter (Algol, Summer-Fall 1978) (1978)
- Letter (Locus #271) (1983)
- Letter (Locus #294) (1985)
- Letter (New Venture, Winter 1975) (1975)
- Letter (Science Fiction Review, August 1969) (1969)
- Letter (Science Fiction Review, January 1969) (1969)
- Letter (Science Fiction Review, January 1971) (1971)
- Letter to Psychotic, May 1968 (1968)
- Letter to Psychotic, September 1968 (1968)
- Letter to Science Fiction Review, December 1969 (1969)
- Letter: Confessions of an India Pale Drinker (1968)
- Notes from the Belfry (Locus #102) (1971)
- Notes from the Belfry (Locus #108) (1972)
- Notes from the Belfry (Locus #110) (1972)
- Notes from the Belfry: Just Take a Little Off the Lip (1973)
- Notes from the Belfry: The One Eyed Man Is King? (1972)
- The Role of the Artist in Science Fiction (1976) with Frank Kelly Freas and Eddie Jones and John Schoenherr and Karel Thole
- The Spirit Was Willing (1977)
- 'Ware Hawk (1983)
- 17 X Infinity (1969)
- 6 x H (1963)
- A Darkness in My Soul (1972)
- A Gift from Earth (1970)
- A Planet of Your Own (1966)
- A Private Cosmos (1968)
- A Promising Planet (1970)
- A Specter Is Haunting Texas (1969)
- A Talent for the Invisible (1973)
- A Way Home (1968)
- A World Aflame (1974)
- Adam Link — Robot (1965)
- After 12,000 Years (1950)
- Algol, #12 (1967)
- Algol, #25, Winter 1976 (1976)
- Algol, #31, Spring 1978 (1978)
- Almuric (1964)
- Alpha Centauri or Die! (1963)
- Alpha Yes, Terra No! (1965)
- Amazing Science Fiction, January 1984 (1984)
- Amazing Science Fiction, March 1983 (1983)
- An Exercise for Madmen (1978)
- Analog 2 (1965)
- Analog Science Fiction/Science Fact, December 1975 (1975)
- Analog Science Fiction/Science Fact, December 1978 (1978)
- Analog Science Fiction/Science Fact, December 1984 (1984)
- Analog Science Fiction/Science Fact, February 1974 (1974)
- Analog Science Fiction/Science Fact, June 1976 (1976)
- Analog Science Fiction/Science Fact, March 1975 (1975)
- Analog Science Fiction/Science Fact, March 1983 (1983)
- Analog Science Fiction/Science Fact, May 1973 (1973)
- Analog Science Fiction/Science Fact, May 1974 (1974)
- Analog Science Fiction/Science Fact, May 1975 (1975)
- Analog Science Fiction/Science Fact, Mid-December 1984 (1984)
- Analog Science Fiction/Science Fact, November 1974 (1974)
- Analog Science Fiction/Science Fact, November 1976 (1976)
- Analog Science Fiction/Science Fact, October 1972 (1972)
- Analog Science Fiction/Science Fact, September 1973 (1973)
- Anthropol (1968)
- Arena of Antares (1974)
- Avenger of Antares (1975)
- Battle for the Stars (1964)
- BayCon: 26th World SF Convention (1968)
- Beachhead Planet (1970)
- Behold the Stars (1965)
- Berserker's Planet (1975)
- Beyond the Stars (1963)
- Bladesman of Antares (1975)
- Bow Down to Nul (1966)
- Bug Jack Barron (1969)
- Burning with a Vision: Poetry of Science and the Fantastic (1984)
- C.O.D. Mars (1968)
- Captives of the Flame (1963)
- Century of the Manikin (1972)
- Children of the Lens (1966)
- Children of the Lens (1970)
- City of a Thousand Suns (1965)
- City of Illusions (1967)
- Clash of Star-Kings (1966)
- Cosmic Engineers (1964)
- Cosmic Engineers (1967)
- Cosmos Science Fiction and Fantasy Magazine, November 1977 (1977)
- Cosmos Science Fiction and Fantasy Magazine, September 1977 (1977)
- Cradle of the Sun (1969)
- Damnation Alley (1969)
- Danger from Vega (1966)
- Dangerous Visions and New Worlds: Radical Science Fiction, 1950 to 1985 (2021) with Robert Bonfils and Jerry Cosgrove and Jim Dietz and Jan Esteves and Antony Maitland and Mercer Mayer and David Pelham and Richard Powers and Lawrence Ratzkin and Gene Szafran and Murray Tinkelman and John Yates
- Dark Piper (1969)
- Dark Planet (1971)
- Darkover Landfall (1972)
- Dawnman Planet (1966)
- Demons' World (1964)
- Dimension 4 (1964)
- Dr. Bloodmoney or How We Got Along After the Bomb (1965)
- Dune Messiah (1969)
- Dwellers of the Deep (1970)
- Earth Enslaved (1974)
- Echo X (1964)
- Eight Against Utopia (1967)
- Eight Stories from The Rest of the Robots (1966)
- Empire Star (1966)
- Enemy Within the Skull (1974)
- Entry to Elsewhen (1972)
- Exiles of Time (1965)
- Fantastic Stories of Imagination, March 1963 (1963)
- Fantasy Book, Vol. 1, No. 6 (1950)
- Fear That Man (1969)
- First Lensman (1964)
- First Lensman (1970)
- Five Against Arlane (1967)
- Fliers of Antares (1975)
- Flight from Yesterday (1963)
- Flux (1974)
- Four for Tomorrow (1967)
- Fugitive of the Stars (1965)
- Galactic Patrol (1966)
- Galactic Patrol (1970)
- Galaxy #38 [Italian] (1961)
- Galaxy #39 [Italian] (1961)
- Galaxy #40 [Italian] (1961)
- Galaxy #53 [Italian] (1962)
- Galaxy #62 [Italian] (1963)
- Galaxy Magazine, April 1962 (1962)
- Galaxy Magazine, April 1966 (1966)
- Galaxy Magazine, April 1970 (1970)
- Galaxy Magazine, April 1971 (1971)
- Galaxy Magazine, August 1962 (1962)
- Galaxy Magazine, August-September 1970 (1970)
- Galaxy Magazine, December 1958 (1958)
- Galaxy Magazine, December 1969 (1969) with Phoebe Gaughan
- Galaxy Magazine, December 1970 (1970)
- Galaxy Magazine, February 1962 (1962)
- Galaxy Magazine, February 1963 (1963)
- Galaxy Magazine, February 1967 (1967)
- Galaxy Magazine, February 1970 (1970)
- Galaxy Magazine, February 1971 (1971)
- Galaxy Magazine, January 1971 (1971)
- Galaxy Magazine, January-February 1972 (1972)
- Galaxy Magazine, July 1968 (1968)
- Galaxy Magazine, July 1970 (1970)
- Galaxy Magazine, July-August 1971 (1971)
- Galaxy Magazine, July-August 1972 (1972)
- Galaxy Magazine, June 1970 (1970)
- Galaxy Magazine, March 1970 (1970)
- Galaxy Magazine, March 1971 (1971)
- Galaxy Magazine, March-April 1972 (1972)
- Galaxy Magazine, May 1970 (1970)
- Galaxy Magazine, May-June 1971 (1971)
- Galaxy Magazine, May-June 1972 (1972)
- Galaxy Magazine, November 1969 (1969)
- Galaxy Magazine, October-November 1970 (1970)
- Galaxy Magazine, September 1968 (1968)
- Galaxy Magazine, September-October 1971 (1971)
- Galaxy of the Lost (1973)
- Galaxy Science Fiction, December 1957 (1957)
- Galaxy Science Fiction, July 1957 (1957)
- Galaxy, April 1974 (1974)
- Galaxy, April 1975 (1975)
- Galaxy, March 1974 (1974)
- Galaxy, May-June 1973 (1973)
- Galaxy, November 1973 (1973)
- Galaxy, October 1974 (1974)
- Gambler's World (2012)
- Garan the Eternal (1973)
- Gates to Tomorrow (1973)
- Gather in the Hall of the Planets (1971)
- Genius Unlimited (1972)
- Give Warning to the World (1974)
- Gray Lensman (1965)
- Gray Lensman (1970)
- Gray Lensman (1974)
- Gryphon in Glory (1981)
- Hellflower (1969)
- Here Abide Monsters (1973)
- Het science fiction universum [Dutch] (1977)
- Huon of the Horn (1963)
- I Am Legend (1970)
- If, April 1970 (1970)
- If, August 1965 (1965)
- If, December 1966 (1966)
- If, December 1969 (1969)
- If, July 1967 (1967)
- If, July-August 1970 (1970)
- If, July-August 1971 (1971)
- If, March 1960 (1960)
- If, March 1969 (1969)
- If, March-April 1971 (1971)
- If, May 1961 (1961)
- If, May 1967 (1967)
- If, May-June 1970 (1970)
- If, May-June 1971 (1971)
- If, November 1963 (1963)
- If, November 1969 (1969)
- If, November-December 1970 (1970)
- If, November-December 1971 (1971)
- If, October 1965 (1965)
- If, October 1969 (1969)
- If, September-October 1970 (1970)
- Index to the Science Fiction Magazines 1968 (1969)
- International Science Fiction, November 1967 (1967)
- International Science-Fiction, June 1968 (1968)
- Invader on My Back (1968)
- Invasion of the Robots (1965)
- Invasion of the Robots (1969)
- Isaac Asimov's Science Fiction Magazine, April 1979 (1979)
- Isaac Asimov's Science Fiction Magazine, February 1979 (1979)
- Isaac Asimov's Science Fiction Magazine, March 1980 (1980)
- Isaac Asimov's Science Fiction Magazine, March-April 1978 (1978)
- Isaac Asimov's Science Fiction Magazine, May 1979 (1979)
- Jewel of Jarhen (1974)
- Jules Verne magasinet, december 1974 [Swedish] (1974)
- King Kobold (1971)
- King of the World's Edge (1967)
- Limbo (1963)
- Locus, #101 November 19, 1971 (1971)
- Locus, #24 March 28, 1969 (1969)
- Lord Kalvan of Otherwhen (1965)
- Luna #4 (Special Issue) (1965)
- Manhounds of Antares (1974)
- Mask of Chaos (1970)
- Masters of the Lamp (1970)
- Masters of the Vortex (1968)
- Masters of the Vortex (1970)
- Masters of the Vortex (1974)
- Mercenary from Tomorrow (1968)
- Merlin's Mirror (1975)
- Message from the Eocene (1964)
- Metropolis (1963)
- Monster of Metelaze (1973)
- Moon of Three Rings (1967)
- Mutiny in Space (1969)
- Nebula Award Stories Number Two (1968)
- Necromancer (1978)
- Night Monsters (1969)
- Nightwings (1970)
- Niven's Laws (1984)
- No Night Without Stars (1975)
- Noah II (1970)
- Ocean on Top (1973)
- Odyssey, Summer 1976 (1976)
- Of Men and Monsters (1969)
- Off Center (1965)
- One Against the Legion (1967)
- One Million Centuries (1967)
- Operation Time Search (1969)
- Operation: Phantasy: The Best from The Phantagraph (1967)
- Outermost: The Art + Life of Jack Gaughan (2010)
- Paingod and Other Delusions (1965)
- People of the Comet (1948)
- Perelandra [Swedish] (1975)
- Phoenix Ship (1969)
- Planet of Dread (1974)
- Planetary Agent X (1965)
- Planets of Adventure (1949)
- President Fu Manchu (1963)
- Pretentious Science Fiction Quarterly, Summer 1978 (1978)
- Prince of Scorpio (1974)
- Psychotic, January 1968 (1968)
- Quag Keep (1978)
- Quest Crosstime (1966)
- Raiders from the Rings (1963)
- Re-Birth (1970)
- Reality Forbidden (1967)
- Retief's War (1966)
- Rogue Dragon (1965)
- Rulers of Men (1965)
- S.O.S. from Three Worlds (1967)
- Saga of Lost Earths (1966)
- Sandworm #7, Spring 1969 (1969)
- Science Fiction Chronicle, #84 September 1986 (1986)
- Science Fiction Novellas (1975)
- Science Fiction Review, August 1969 (1969)
- Science Fiction Review, December 1969 (1969)
- Science Fiction Review, January 1969 (1969)
- Second Stage Lensmen (1965)
- Second Stage Lensmen (1970)
- Secret of the Marauder Satellite (1967)
- Seetee Alert! (1974)
- Shellbreak (1970)
- Ships to the Stars (1964)
- Sideslip (1968)
- Silverlock (1966)
- Sinister Barrier (1964)
- Skylark DuQuesne (1966)
- Skylark DuQuesne (1970)
- Skylark of Valeron (1970)
- Skylark Three (unknown)
- Skylark Three (1966)
- Skylark Three (1970)
- Slave Planet (1963)
- Slave Ship from Sergan (1973)
- Sleeping Planet (1967)
- Soft Come the Dragons (1970)
- Solar Lottery (1968)
- Solaris (1970)
- Son of the Tree (1964)
- Sos the Rope (1968)
- Space Lords (1965)
- Space Lords (1968)
- Space Tug (1965)
- Space, Time & Crime (1968)
- Spawn of Laban (1974)
- Spawn of Satan (1970)
- Speculation, #21 (1969)
- Spell of the Witch World (1972)
- St. Louiscon Program Book (1969)
- Star of Danger (1965)
- Starshine (1966)
- Starshine (1969)
- Stormbringer (1967)
- Strange Doings (1973)
- Strange Fantasy, Fall 1970 (1970)
- Stranger Than You Think (1965)
- Tales in a Jugular Vein (1965)
- Target: Terra (1968)
- Teaching Science Fiction: Education for Tomorrow (1980)
- The 1973 Annual World's Best SF (1973)
- The 1974 Annual World's Best SF (1974)
- The 1975 Annual World's Best SF (1975)
- The 1976 Annual World's Best SF (1976)
- The 1977 Annual World's Best SF (1977)
- The 1978 Annual World's Best SF (1978)
- The 1979 Annual World's Best SF (1979)
- The 1980 Annual World's Best SF (1980)
- The Alien (1977)
- The Atom Conspiracy (1966)
- The Avengers of Carrig (1969)
- The Beasts of Kohl (1966)
- The Best from Fantasy and Science Fiction, Tenth Series (1965)
- The Best from Fantasy and Science Fiction: 14th Series (1968)
- The Best from the Rest of the World (1977)
- The Best of John Jakes (1977)
- The Blind Spot (1964)
- The Blind Worm (1970)
- The Book of Andre Norton (1975)
- The Book of Ellison (1978)
- The Book of Frank Herbert (1973)
- The Book of Fritz Leiber (1974)
- The Book of John Brunner (1976)
- The Book of Philip José Farmer (1973)
- The Book of Poul Anderson (1975)
- The Book of Saberhagen (1975)
- The Brains of Earth (1966)
- The Brass Dragon (1969)
- The Closed Worlds (1968)
- The Coils of Time (1964)
- The Cometeers (1967)
- The Crystal Gryphon (1972)
- The Dark Intruder & Other Stories / Falcons of Narabedla (1964)
- The Day of the Star Cities (1965)
- The Dragon Masters (1963)
- The Duplicators (1964)
- The Eater of Worlds (1974)
- The Einstein Intersection (1967)
- The Electric Sword-Swallowers (1971)
- The Escape Orbit (1965)
- The Eyes of Bolsk (1969)
- The Eyes of the Overworld (1966)
- The Fall of the Dream Machine (1969)
- The Fantastic Swordsmen (1967)
- The Fellowship of the Ring (1965)
- The Fury from Earth (1963)
- The Game-Players of Titan (1963)
- The Ganymede Takeover (1967)
- The Genetic Buccaneer (1974)
- The Gholan Gate (1974)
- The Ghosts of Epidoris (1975)
- The Ghosts of Manacle (1964)
- The Golden People (1964)
- The Great Science Fiction Stories Volume 1, 1939 (1979)
- The Great Science Fiction Stories Volume 2, 1940 (1979)
- The Great Science Fiction Stories Volume 3, 1941 (1980)
- The Halcyon Drift (1972)
- The Heritage of Hastur (1975)
- The House That Stood Still (1965)
- The Houses of Iszm (1964)
- The Invasion of the Body Snatchers (1973)
- The Jargoon Pard (1974)
- The Jewels of Aptor (1962)
- The Kar-Chee Reign (1966)
- The King in Yellow (1965)
- The Last Castle (1967)
- The Left Hand of Darkness (1969)
- The Legion of Space (1967)
- The Legion of Time (1967)
- The Long Twilight (1969)
- The Lord of Death and The Queen of Life (1965)
- The Lost Millennium (1967)
- The Mad Metropolis (1966)
- The Magazine of Fantasy & Science Fiction, February 1980 (1980)
- The Magazine of Fantasy and Science Fiction, April 1964 (1964)
- The Magazine of Fantasy and Science Fiction, April 1966 (1966)
- The Magazine of Fantasy and Science Fiction, December 1964 (1964)
- The Magazine of Fantasy and Science Fiction, December 1967 (1967)
- The Magazine of Fantasy and Science Fiction, December 1968 (1968)
- The Magazine of Fantasy and Science Fiction, February 1964 (1964)
- The Magazine of Fantasy and Science Fiction, February 1965 (1965)
- The Magazine of Fantasy and Science Fiction, February 1971 (1971)
- The Magazine of Fantasy and Science Fiction, January 1966 (1966)
- The Magazine of Fantasy and Science Fiction, July 1965 (1965)
- The Magazine of Fantasy and Science Fiction, July 1967 (1967)
- The Magazine of Fantasy and Science Fiction, July 1968 (1968)
- The Magazine of Fantasy and Science Fiction, June 1970 (1970)
- The Magazine of Fantasy and Science Fiction, June 1973 (1973)
- The Magazine of Fantasy and Science Fiction, March 1967 (1967)
- The Magazine of Fantasy and Science Fiction, March 1976 (1976)
- The Magazine of Fantasy and Science Fiction, May 1969 (1969)
- The Magazine of Fantasy and Science Fiction, November 1969 (1969)
- The Magazine of Fantasy and Science Fiction, November 1970 (1970)
- The Magazine of Fantasy and Science Fiction, September 1966 (1966)
- The Maker of Universes (1965)
- The Man Who Saw Tomorrow (1968)
- The Many Worlds of Magnus Ridolph (1966)
- The Midwich Cuckoos (1969)
- The Mindblocked Man (1972)
- The Motion of Light in Water: Sex and Science Fiction Writing in the East Village, 1957-1965 (1988) with Thomas Canty
- The Noblest Experiment in the Galaxy (1970)
- The Other Log of Phileas Fogg (1973)
- The Path Beyond the Stars (1969)
- The Pictures of Pavanne (1968)
- The Planeteers (1966)
- The Prism (1968)
- The Proxy Intelligence and Other Mind Benders (1971)
- The Queen of Zamba (1977)
- The R-Master (1975)
- The Radio Man (1948)
- The Radium Pool (1949)
- The Rat Race (1950)
- The Rebellers (1963)
- The Repairmen of Cyclops (1965)
- The Reproductive System (1974)
- The Return of the King (1965)
- The Rithian Terror (1965)
- The Sea is Boiling Hot (1971)
- The Second Book of Fritz Leiber (1975)
- The Second If Reader of Science Fiction (1969)
- The Second War of the Worlds (1976)
- The Ship from Atlantis (1967)
- The Ship That Sailed the Time Stream (1965)
- The Ship Who Sang (1969)
- The Ships of Durostorum (1970)
- The Silkie (1969)
- The Six Fingers of Time (2011)
- The Skylark of Space (1966)
- The Skylark of Space (1970)
- The Space Adventure Novels of Andre Norton (1978)
- The Space-Time Juggler (1963)
- The Stainless Steel Rat's Revenge (1970)
- The Star Kings (1967)
- The Star Magicians (1966)
- The Star Mill (1966)
- The Star Wasps (1963)
- The Stardroppers (1972)
- The Stealer of Souls and Other Stories (1967)
- The Stolen Sun (1967)
- The Time Machine and Other Stories (1969)
- The Time Twister (1968)
- The Time-Swept City (1977)
- The Tin Angel (1973)
- The Toymaker (1951)
- The Trees of Zharka (1975)
- The Twisted Men (1964)
- The Two Towers (1965)
- The Underpeople (1968)
- The Unholy City (1968)
- The Universe Maker (1967)
- The Wagered World (1969)
- The Wanderer (1969)
- The Warlock in Spite of Himself (1969)
- The Weapon From Beyond (1967)
- The Weapon Makers (1966)
- The Weirdstone of Brisingamen (1966)
- The Whole Man (1969)
- The Witch World Novels of Andre Norton (1977)
- The Wizard of Starship Poseidon (1963)
- The Works of M. P. Shiel (1948) with Salvador Dali
- The World Asunder (1976)
- The World Between and Other Stories (1965)
- The Worlds of Poul Anderson (1978)
- The Worlds of Robert A. Heinlein (1966)
- The Wrath of Fu Manchu (1976)
- The Wrecks of Time (1967)
- The X Factor (1967)
- The Youth Monopoly (1968)
- The Zap Gun (1967)
- Thorns (1969)
- Three Against the Witch World (1965)
- Three Worlds of Futurity (1964)
- Three Worlds to Conquer (1964)
- Three Worlds to Conquer (1968)
- Time and Again (1963)
- Time to Come (1969)
- Time to Live (1966)
- Time Tunnel (1964)
- Times Without Number (1962)
- Tomorrow and Tomorrow (1965)
- Tramontane (1967)
- Triplanetary (1965)
- Triplanetary (1970)
- Triple Detente (1974)
- Trouble with Lichen (1969)
- Turning On (1967)
- Two Hundred Million A. D. (1964)
- Venus Equilateral (1967)
- Waldo and Magic, Inc. (1963)
- Waldo and Magic, Inc. (1968)
- Warlock of the Witch World (1967)
- Web of the Witch World (1964)
- What Strange Stars and Skies (1965)
- When the Star Kings Die (1967)
- Witch World (1963)
- World of the Sleeper (1967)
- World of the Starwolves (1968)
- World's Best Science Fiction (1971)
- World's Best Science Fiction First Series (1970)
- World's Best Science Fiction: 1967 (1967)
- World's Best Science Fiction: 1968 (1968)
- World's Best Science Fiction: Fourth Series (1970)
- World's Best Science Fiction: Third Series (1970)
- Worlds of Fantasy, #1, 1968 (1968)
- Worlds of Fantasy, #2, 1970 (1970)
- Worlds of Fantasy, Spring 1971 (1971)
- Worlds of If, February 1970 (1970)
- Worlds of If, January 1970 (1970)
- Worlds of If, January-February 1971 (1971)
- Worlds of If, January-February 1972 (1972)
- Worlds of If, July-August 1972 (1972)
- Worlds of If, March-April 1972 (1972)
- Worlds of If, May-June 1972 (1972)
- Worlds of If, May-June 1974 (1974)
- Worlds of Tomorrow, Spring 1971 (1971)
- Worlds of Tomorrow, Summer 1970 (1970)
- Worlds of Tomorrow, Winter 1970 (1970)
- Wraiths of Time (1976)
- Year of the Unicorn (1965)
- Yurth Burden (1978)
- "From Cariboo to Carry Nation" (1965)
- "She" for Hannes (August 1963) (1965)
- "Stepson to Creation" (1977)
- "World of the Starwolves" (1969)
-
Кто там, в толще скал??Kto tam, v tolshche skal?[Russian] (2015)
- ... font quatre [French] (1971)
- 220 - Advanced Field Exploration (1972)
- 26 Days on Earth (1972)
- 3 Vignettes (1977)
- 3 Vignettes [2] (1977)
- 3 Vignettes [3] (1977)
- 3 Vignettes [4] (1977)
- 3 Vignettes [5] (1977)
- 3 Vignettes [6] (1977)
- A !Tangled Web (1981)
- A !Tangled Web [2] [German] (1982)
- A Better Rat-Trap (1973)
- A Bowl Bigger Than Earth (1967)
- A Brand New World (1964)
- A Congregation of Vapors (1971)
- A Darkness in My Soul (frontispiece) (1972)
- A Fremde in Need (1982)
- A Fremde in Need [2] (1982)
- A Friendly Game of Crola (1985)
- A Full Member of the Club (1974)
- A Game of Biochess (1970)
- A Kind of Murder (1974)
- A Knight of Ghosts and Shadows (Part 2 of 2) (1974)
- A Penny's Worth (1976)
- A Penny's Worth [2] (1976)
- A Planet of Your Own (1966)
- A Prince of the Captivity (1971)
- A Promising Planet (frontispiece) (1970)
- A Quiet, Rainy Afternoon (1979)
- A Rain of Pebbles (1977)
- A Recursion in Metastories (1966)
- A Rose for Ecclesiastes (1967)
- A Sailor's Delight (1980)
- A Scatter of Stardust (frontispiece) (1972)
- A Ship Will Come (1970)
- A Specter Is Haunting Texas (frontispiece) (1978)
- A Specter is Haunting Texas (Part 1 of 3) (1968)
- A Specter is Haunting Texas (Part 1 of 3) [2] (1968)
- A Specter is Haunting Texas (Part 1 of 3) [3] (1968)
- A Specter is Haunting Texas (Part 1 of 3) [4] (1968)
- A Specter is Haunting Texas (Part 1 of 3) [5] (1968)
- A Specter is Haunting Texas (Part 1 of 3) [6] (1968)
- A Specter is Haunting Texas (Part 1 of 3) [7] (1968)
- A Specter is Haunting Texas (Part 2 of 3) (1968)
- A Specter is Haunting Texas (Part 2 of 3) [2] (1968)
- A Specter is Haunting Texas (Part 2 of 3) [3] (1968)
- A Specter is Haunting Texas (Part 2 of 3) [4] (1968)
- A Specter is Haunting Texas (Part 2 of 3) [5] (1968)
- A Specter is Haunting Texas (Part 2 of 3) [6] (1968)
- A Specter is Haunting Texas (Part 2 of 3) [7] (1968)
- A Specter is Haunting Texas (Part 3 of 3) (1968)
- A Specter is Haunting Texas (Part 3 of 3) [2] (1968)
- A Specter is Haunting Texas (Part 3 of 3) [3] (1968)
- A Specter is Haunting Texas (Part 3 of 3) [4] (1968)
- A Specter is Haunting Texas (Part 3 of 3) [5] (1968)
- A Specter is Haunting Texas (Part 3 of 3) [6] (1968)
- A Style in Treason (1970)
- A Style in Treason [2] (1970)
- A Suppliant in Space (1973)
- A Talent for the Invisible (frontispiece) (1973)
- A Time of Changes (Part 1 of 3) (1971)
- A Time of Changes (Part 1 of 3) [2] (1971)
- A Time of Changes (Part 3 of 3) (1971)
- A Touch of Infinity (frontispiece) (1974)
- A Touch of Strange (frontispiece) (1978)
- A Trace of Dreams (frontispiece) (1972)
- A Twice-Toed Tale (1979)
- A Visit to Cleveland General (1968)
- A Visit to Cleveland General [2] (1968)
- A Voyage to Dari (frontispiece) (1974)
- A Woman and Her Friend (1973)
- A World Aflame (frontispiece) (1974)
- A-W-F Unlimited (1961)
- A-W-F Unlimited [2] (1961)
- After the End and Before the Beginning (1971)
- Against Infinity (Part 1 of 2) (1983)
- Against Infinity (Part 1 of 2) [2] (1983)
- Against Infinity (Part 1 of 2) [3] (1983)
- Against Infinity (Part 2 of 2) (1983)
- Ageism (1975)
- Agnes, Accent and Access (1973)
- Algol 20, May 1973 (1973)
- Alien Sea (1968)
- Aliens! (1980)
- Alisia's Gift (1986)
- All Brothers Are Men (1970)
- All But the Words (1971)
- All That Earthly Remains (1962)
- All the Bridges Rusting (1973)
- All the People (1961)
- All the Way Up, All the Way Down (1971)
- All Times Possible (frontispiece) (1974)
- Allison, Carmichael and Tattersall (1970)
- Allison, Carmichael and Tattersall [2] (1970)
- Allison, Carmichael and Tattersall [3] (1970)
- Almuric (1964)
- Alpha Yes, Terra No! (1965)
- Alternate Orbits (frontispiece) (1971)
- Amazing Story (1982)
- Amnesty (1977)
- An Abundance of Dragons (1981)
- An Eye for a What? (1957)
- An Eye for a What? [2] (1957)
- An Eye for a What? [3] (1957)
- An Honorable Death (1961)
- An Honorable Death [2] (1961)
- An Honorable Death [3] (1961)
- Anarchaos (frontispiece) (1967)
- Ancient, My Enemy (frontispiece) (1976)
- And All the Earth a Grave (1963)
- And Baby Makes Three (1973)
- And No Birds Sing (1973)
- And Now They Wake (Part 1 of 3) (1969)
- And Now They Wake (Part 1 of 3) [2] (1969)
- And Now They Wake (Part 1 of 3) [3] (1969)
- And Now They Wake (Part 2 of 3) (1969)
- And Now They Wake (Part 2 of 3) [2] (1969)
- And Now They Wake (Part 2 of 3) [3] (1969)
- And Now They Wake (Part 2 of 3) [4] (1969)
- And Now They Wake (Part 3 of 3) (1969)
- And Now They Wake (Part 3 of 3) [2] (1969)
- And Now They Wake (Part 3 of 3) [3] (1969)
- And So Say All of Us (1969)
- Android Avenger (1965)
- Answer Came There None (1974)
- Answering Service (1967)
- Anthropol (1968)
- Appropriate Punishment (1969)
- Arena of Antares (1974)
- Arnten of Ultima Thule (1971)
- Art Appreciation (1985)
- As Is (1968)
- As the Curtain Falls (frontispiece) (1974)
- At Bay with the Baycon (1969)
- At the End of the Orbit (1961)
- Atlantida (1964)
- Atlantis (map) (1967)
- Aura of Immortality (1974)
- Author Plus (1981)
- Authorgraphs: An Interview with Harlan Ellison (1969)
- Authorgraphs: An Interview with Jack Williamson (1969)
- Authorgraphs: An Interview with Lester del Rey (1969)
- Authorgraphs: An Interview with Robert Bloch (1969)
- Authorgraphs: An Interview with Roger Zelazny (1969)
- Autumntime (1971)
- Avenger of Antares (1975)
- Babel-17 (title page) (1966)
- Ballots and Bandits (1970)
- Basic Genesis (1981)
- Beanstalk (frontispiece) (1973)
- Beauty (1949) with Jon Arfstrom
- Beaver Tears (1976)
- Beaver Tears [2] (1976)
- Beaver Tears [3] (1976)
- Beer Mutterings (Science Fiction Review, April 1970) (1970)
- Beer Mutterings (Science Fiction Review, April 1970) (1970)
- Behind the Walls of Terra (title page) (1970)
- Behold the Stars (1965)
- Beneath the Shattered Moons (frontispiece) (1977)
- Berserker's Planet (frontispiece) (1974)
- Berserker's Planet (Part 1 of 2) (1974)
- Beyond the Galactic Lens (frontispiece) (1975)
- Beyond the Stars (title page) (1963)
- Big Baby (1962)
- Big Baby [2] (1962)
- Big Baby [3] (1962)
- Bircher (1966)
- Birds Fly South in Winter (1971)
- Bitterblooms (1979)
- Black as the Pit, from Pole to Pole (1979)
- Black Fly (1974)
- Bladesman of Antares (1975)
- Blaze of Glory (1957)
- Bleeding Turnips (1982)
- Blessings Well Mixed (1981)
- Blue Fire (1965)
- Blue Fire [2] (1965)
- Blue Fire [3] (1965)
- Bogeyman (1965)
- Bogeyman [2] (1965)
- Bogeyman [3] (1965)
- Bogeyman [4] (1965)
- Book Reviews (Science Fiction Review, April 1970) (1970)
- Boomer Flats (1971)
- Born Under Mars (1967)
- Brain of the Galaxy (1965)
- Brains Isn't Everything (1976)
- Bramble Bush (1968)
- Bramble Bush [2] (1968)
- Break a Leg (1957)
- Break a Leg [2] (1957)
- Break a Leg [3] (1957)
- Breaking Point (frontispiece) (1973)
- Bright New Universe (frontispiece) (1967)
- Brood World Barbarian (1969)
- Brother Berserker (1967)
- Brother to Demons (1978)
- Brother to Gods (1978)
- Brother to Gods [2] (1978)
- Bubbles When They Burst (1971)
- Building Block (1975)
- Bulge (1968)
- But Wait! There's More! (1984)
- Butterfly 9 (1957)
- Butterfly 9 [2] (1957)
- Butterfly 9 [3] (1957)
- By Any Other Name (1976)
- By Any Other Name [2] (1976)
- By Any Other Name [3] (1976)
- By the Falls (1970)
- By the Seashore (1973)
- C.O.D. Mars (frontispiece) (1968)
- Caesar Clark (1977)
- Cage of Brass (1968)
- Calendars (1974)
- Call Him Moses (1978)
- Call Him Moses [2] (1978)
- Call Him Moses [3] (1978)
- Call Me Proteus (1973)
- Can These Bones Live? (1979)
- Can You Feel Anything When I Do This? (frontispiece) (1974)
- Cantor's War (1974)
- Caravan (1972)
- Carruthers' Last Stand (1978)
- Cartoon: "ASBOLUTELY NORMAL Stories" (1954)
- Cartoon: "Don't tell me your troubles! I have 187 sinus cavities!" (1969)
- Cartoon: "If you ever see a princess with a wart on her lip tell her Toady sent you" (1969)
- Cartoon: Whatever you do--don't ever drink anything Elliot Shorter mixes up! I used to be Banks Mebance!" (1969)
- Catalyst Run (1974)
- Catalyst Run [2] (1974)
- Catalyst Run [3] (1974)
- Catalyst Run [4] (1974)
- Catch a Falling Star (frontispiece) (1968)
- Catseye (frontispiece) (unknown)
- Cauchemar... Cauchemar... [French] (1968)
- Cautionary Tales (1978)
- Center-Spread Girl (1968)
- Ces féroces Qornts [French] (1965)
- Changelings (1975)
- Changing Woman (1972)
- Child's Play (1970)
- Cinderella Story (1961)
- City of a Thousand Suns (1965)
- City of a Thousand Suns (title page) (1965)
- City of Illusions (frontispiece) (1967)
- City of Yesterday (1967)
- Clans of the Alphane Moon (1964)
- Clans of the Alphane Moon (frontispiece) (1972)
- Clash of Star-Kings (1966)
- Clear as Mud (1967)
- Cleaving (1984)
- Cloak of Anarchy (1972)
- Cloak of Anarchy [2] (1972)
- Code Duello (1968)
- Cold Friend (1973)
- Collector's Item (1981)
- Collision Course (frontispiece) (1973)
- Common Denominator (1972)
- Common Denominator [2] (1972)
- Computer War (frontispiece) (1967)
- Conan and the Cenotaph (1968)
- Conscience Interplanetary (frontispiece) (1974)
- Consort (1975)
- Continuous Performance (1974)
- Contraband from Otherspace (title page) (1967)
- Cool Affection (1974)
- Coup de Grace (1966)
- Coursing (1982)
- Cousins (1980)
- Cox's Quality (1974)
- Cradle of the Sun (frontispiece) (1969)
- Crashing Suns (1965)
- Crashing Suns (Ace Books, 1965, interior art) (1965)
- Crazy Annaoj (1968)
- Created Equal (1974)
- Credo: Willy Ley: The First Citizen of the Moon (1969)
- Crisis on Cheiron (frontispiece) (1967)
- Critical Path (1983)
- Critical Threshold (frontispiece) (1977)
- Crown of Stars (1966)
- Crown of Stars [2] (1966)
- Crown of Stars [3] (1966)
- Crown of Stars [4] (1966)
- Cry Wolf! (1974)
- Cycle of Nemesis (title page) (1967)
- Cycles (1985)
- Dam Nuisance (1966)
- Damnation Alley (1967)
- Damnation Alley [2] (1967)
- Damnation Alley [3] (1967)
- Damnation Alley [4] (1967)
- Danger from Vega (1966)
- Dangereux d'être un noyau ! [French] (1957)
- Dangereux d'être un noyau ! [2] [French] (1957)
- Dangereux d'être un noyau ! [3] [French] (1957)
- Dark Inferno (Part 1 of 2) (1972)
- Dark Inferno (Part 2 of 2) (1972)
- Dark of the Woods (frontispiece) (1970)
- Dark, Dark, the Dead Star (1970)
- Darkness (1968)
- Darkover Landfall (frontispiece) (1972)
- Dawn (Part 1 of 4) (1981)
- Dawn (Part 2 of 4) (1981)
- Dawn (Part 3 of 4) (1981)
- Dawn (Part 4 of 4) (1981)
- Dea Ex Machina (1975)
- Deadly Moon (1964)
- Death and Birth of the Angakok (1965)
- Death and Birth of the Angakok [2] (1965)
- Death and Birth of the Angakok [3] (1965)
- Death and Designation Among the Asadi (1973)
- Death Is a Dream (frontispiece) (1967)
- Death's Master (frontispiece) (1979)
- Deathsong (1974)
- Deep Joat (1981)
- Defender of Death (1971)
- Delivery Tube (1966)
- Delivery Tube [2] (1966)
- Demons' World (1964)
- Deny the Slake (1957)
- Der Heisse Kosmonaut (1968)
- Derai (frontispiece) (1968)
- Destination: Saturn (1968)
- Detour (1980)
- Devil You Don't Know (1978)
- Diadem from the Stars (frontispiece) (1977)
- Dingbat (1973)
- Discover a Latent Moses (1970)
- Discover a Latent Moses [2] (1970)
- Dog Day Evening (1977)
- Don't Bite the Sun (frontispiece) (1976)
- Doom of the Green Planet (frontispiece) (1968)
- Doomship (1973)
- Doppelgangers (1966)
- Dorsai! (frontispiece) (1976)
- Down in the Black Gang (1969)
- Downbelow Station (frontispiece) (1981)
- Downward to the Earth (Part 2 of 4) (1969)
- Downward to the Earth (Part 2 of 4) [2] (1969)
- Downward to the Earth (Part 3 of 4) (1970)
- Downward to the Earth (Part 3 of 4) [2] (1970)
- Downward to the Earth (Part 4 of 4) (1970)
- Dr. Bloodmoney or How We Got Along After the Bomb (1965)
- Dr. Kometevsky's Day (1964)
- Dr. Morris Goldpepper Returns (1962)
- Dread Companion (frontispiece) (1972)
- Dreamworld (1962)
- Driftglass (1967)
- Drums of Tombalku (map) (1967)
- Dry Run (1970)
- Duckworth and the Sound Probe (1971)
- Dunderbird (1969)
- Dunderbird [2] (1969)
- Dunderbird [3] (1969)
- Dune Messiah (Part 1 of 5) (1969)
- Dune Messiah (Part 1 of 5) [2] (1969)
- Dune Messiah (Part 1 of 5) [3] (1969)
- Dying Inside (Part 1 of 2) (1972)
- Dying Inside (Part 2 of 2) (1972)
- Earth Eighteen (1964)
- Earth Eighteen [10] (1964)
- Earth Eighteen [11] (1964)
- Earth Eighteen [12] (1964)
- Earth Eighteen [2] (1964)
- Earth Eighteen [3] (1964)
- Earth Eighteen [4] (1964)
- Earth Eighteen [5] (1964)
- Earth Eighteen [6] (1964)
- Earth Eighteen [7] (1964)
- Earth Eighteen [8] (1964)
- Earth Eighteen [9] (1964)
- Earth Enslaved (frontispiece) (1974)
- Earth Factor X (frontispiece) (1976)
- Earth's Last Citadel (1964)
- Earth, Air, Fire and Water (Part 1 of 3) (1974)
- Earth, Air, Fire and Water (Part 1 of 3) [2] (1974)
- Earth, Air, Fire and Water (Part 1 of 3) [3] (1974)
- Earth, Air, Fire and Water (Part 1 of 3) [4] (1974)
- Earth, Air, Fire and Water (Part 2 of 3) (1974)
- Earth, Air, Fire and Water (Part 2 of 3) [2] (1974)
- Earth, Air, Fire and Water (Part 2 of 3) [3] (1974)
- Earth, Air, Fire and Water (Part 3 of 3) (1974)
- Earth, Air, Fire and Water (Part 3 of 3) [2] (1974)
- Earth, Air, Fire and Water (Part 3 of 3) [3] (1974)
- Earthchild (frontispiece) (1977)
- Earthrim (frontispiece) (1969)
- Ecdysiac (1967)
- Echec à la colonie [French] (1966)
- Edge of Night (Part 1 of 2) (1966)
- Edge of Night (Part 2 of 2) (1966)
- Eight Ball Blues (1980)
- Elemental (1984)
- Elemental [2] (1984)
- Elephant with Wooden Leg (1975)
- Elmo's Box (1975)
- Ember Eyes (1974)
- Embryonic Dharma (1976)
- Embryonic Dharma [2] (1976)
- Empire of Two Worlds (frontispiece) (1972)
- Empire Star (1966)
- Empress of Outer Space (1965)
- Endfray of the Ofay (1969)
- Endless Shadow (1964)
- Enemy of the Silkies (1967)
- Enemy of the Silkies [2] (1967)
- Enemy of the Silkies [3] (1967)
- Enemy Within the Skull (frontispiece) (1974)
- Enigma from Tantalus [2] (1965)
- Entry to Elsewhen (1972)
- Envoy to the Dog Star (1967)
- Equals Four (1970)
- Ersalz's Rule (1969)
- Esidarap ot Pirt Dnuor (1960)
- Esmeralda (1972)
- Exiled From Earth (Part 1 of 2) (1971)
- Exorcycle (1982)
- Eye of the Storm (1974)
- Eyes I Dare Not Meet in Dreams (1975)
- F.O.D. (1972)
- F.O.D. [2] (1972)
- Fabriquez dix mille hommes ! [French] (1957)
- Factsheet Six (1968)
- Factsheet Six [2] (1968)
- Falcons of Narabedla (1964)
- Fallen Spaceman (1971)
- Family Program (1974)
- Fantasy Advertiser, November 1950 (back cover) (1950)
- Fantasy and Science Fiction by Jack Vance (The Dragon Masters) (1977)
- Farnham's Freehold (Part 1 of 3) (1964)
- Farnham's Freehold (Part 2 of 3) (1964)
- Farnham's Freehold (Part 3 of 3) (1964)
- Field of Vision (1973)
- Five Against Arlane (1967)
- Fix (1973)
- Flamboyante gloire [French] (1957)
- Flatlander (1967)
- Fliers of Antares (1975)
- Flow My Tears, The Policeman Said (frontispiece) (1975)
- Flowers in His Eyes (1968)
- Flux (frontispiece) (1974)
- Force Over Distance (1973)
- Force Over Distance [2] (1973)
- Found! (1980)
- Four Visions (1978)
- Free Enterprise (1984)
- Friends Come in Boxes (frontispiece) (1973)
- From This Day Forward (frontispiece) (1973)
- Fugitive of the Stars (1965)
- Full Fathom Five My Father Lies (1981)
- Fungo the Unrighteous (1986)
- Funny Place (1970)
- Future Forbidden (1973)
- Galactic Consumer Report No. 3: A Survey of the Membership (1967)
- Galactic Derelict (1972)
- Galaxy Bookshelf (Galaxy Magazine, February 1968) (1968)
- Galaxy Magazine, December 1958 (cover) (1958)
- Galaxy of the Lost (frontispiece) (1973)
- Gallagher's Glacier (frontispiece) (1970)
- Gambler (1972)
- Gambler's World (1961)
- Gambler's World (reprint) (2007)
- Garan the Eternal (frontispiece) (1973)
- Gateway III - Heechee Rendezvous (Part 3 of 3) (1984)
- Gateway III - Where the Heechee Feared to Go (Part 2 of 3) (1984)
- Gateway III — Beyond the Gate (part 1 of 3) (1984)
- Gaughan on Robinson (1978)
- Gehenna (1971)
- Genii (1972)
- Get the Lead Out (1976)
- Getting Together (1972)
- Ghosts (1973)
- Giant Killer (1965)
- Girl Saturday (1973)
- Give Warning to the World (frontispiece) (1974)
- Glossolalia (1982)
- Godel Numbers (1969)
- Godel Numbers [2] (1969)
- Gods on Olympus (1972)
- Going Home (1954)
- Golden Quicksand (1969)
- Golden Quicksand [10] (1969)
- Golden Quicksand [11] (1969)
- Golden Quicksand [12] (1969)
- Golden Quicksand [2] (1969)
- Golden Quicksand [3] (1969)
- Golden Quicksand [4] (1969)
- Golden Quicksand [5] (1969)
- Golden Quicksand [6] (1969)
- Golden Quicksand [7] (1969)
- Golden Quicksand [8] (1969)
- Golden Quicksand [9] (1969)
- Golem 100 (1980)
- Goodbye Amanda Jean (1970)
- Granfalloon #1 (1968)
- Greyspun's Gift (1970)
- Groovyland [French] (1969)
- Guardians at the Gate of Morpheus (1976)
- Gullikksen and the 500-Pound Hallucination (1984)
- Gut in Peril (1974)
- Guzman's Gardener (1978)
- Gypsy (1950)
- Gypsy [2] (1950)
- Génies en vrac [French] (1966)
- H. G. Wells: Critic of Progress (Part 3 of 5) (1968)
- H. G. Wells: Critic of Progress (Part 3 of 5) [2] (1968)
- H. G. Wells: Critic of Progress (Part 3 of 5) [3] (1968)
- H. G. Wells: Critic of Progress (Part 3 of 5) [4] (1968)
- H. G. Wells: Critic of Progress (Part 3 of 5) [5] (1968)
- H. G. Wells: Critic of Progress (Part 3 of 5) [6] (1968)
- H. P. Lovecrafts Traumland (map) [German] (1980)
- Handicap (1967)
- Handicap [2] (1967)
- Handicap [3] (1967)
- Handicap [4] (1967)
- Hard to Be a God (frontispiece) (1974)
- Have You Heard the One ... ? (1980)
- He That Moves (1968)
- Heavenly Host (1966)
- Heavenly Host [2] (1966)
- Heavenly Host [3] (1966)
- Heavenly Host [4] (1966)
- Helium (Part 1 of 3) (1975)
- Helium (Part 2 of 3) (1975)
- Helium (Part 2 of 3) [2] (1975)
- Helium (Part 3 of 3) (1975)
- Helium (Part 3 of 3) [2] (1975)
- Helium (Part 3 of 3) [3] (1975)
- Heller's Leap (frontispiece) (1979)
- Her Fine and Private Planet (1973)
- Here Abide Monsters (frontispiece) (1974)
- Heroes Die But Once (1969)
- Heroic Symphony (1968)
- High G (1965)
- High G [2] (1965)
- High Sorcery (1970)
- High Weir (1968)
- Hindsight (1984)
- Hindsight [2] (1984)
- Hired Man (1970)
- Histoport 3939 (1970)
- Histoport 3939 [2] (1970)
- Home from the Shore (1963)
- Home from the Shore [2] (1963)
- Homunculus (1967)
- Hostages of Zark (1984)
- Hour of the Horde (frontispiece) (1978)
- House Divided (1974)
- How to Blow Up an Asteroid (1973)
- How to Move the Earth (1976)
- However (1968)
- Humanoïde [French] (1970)
- Humanoïde [2] [French] (1970)
- Humanoïde [3] [French] (1970)
- Humans, Go Home! (1969)
- Humans, Go Home! [2] (1969)
- Humans, Go Home! [3] (1969)
- Humans, Go Home! [4] (1969)
- Humans, Go Home! [5] (1969)
- Humans, Go Home! [6] (1969)
- Hunters of Gor (1974)
- Hurdle (1972)
- I Am a Nucleus (1957)
- I Am a Nucleus [2] (1957)
- I Am a Nucleus [3] (1957)
- I Lost My Love to the Space Shuttle Columbia (1983)
- I O U (1961)
- Ice Crown (frontispiece) (1971)
- Iduna's Universe (frontispiece) (1979)
- If a Flower Could Eclipse (1970)
- If Continents Can Wander, Why Not Planets (1981)
- If Ever I Should Leave You (1974)
- If You Can Fill the Unforgiving Minute (1980)
- If You Can Fill the Unforgiving Minute [2] (1980)
- If You Can Fill the Unforgiving Minute [3] (1980)
- Illusions (1979)
- Illusions [2] (1979)
- Illusions [3] (1982)
- In 2112 (1968)
- In Adam's Fall (1979)
- In Alien Flesh (1980)
- In einer Welt dazwischen [2] [German] (1988)
- In einer Welt dazwischen [3] [German] (1988)
- In Memoriam (1968)
- In the Cellar (1979)
- In the Hall of the Martian Kings (1979)
- In the Islands (1983)
- In the Ocean of Night (1972)
- In the Temple of Mars (1966)
- Inadvisable Adversaries (1984)
- Inaugural (1976)
- Inaugural [2] (1976)
- Incident on Ath (frontispiece) (1978)
- Infidel of Five Temples (1974)
- Inheritance (Part 1 of 2) (1973)
- Into the Alternate Universe (1964)
- Invader On My Back (frontispiece) (1968)
- Inverted World (Part 1 of 4) (1973)
- Inverted World (Part 2 of 4) (1974)
- Inverted World (Part 3 of 4) (1974)
- Inverted World (Part 4 of 4) (1974)
- Ipomoea (frontispiece) (1969)
- Is Anyone There? (title page) (1968)
- Is the World in Curious Shape? (1980)
- Islands of Space (1966)
- J. Passepartout (1973)
- Jack Gaughan (1979)
- Jack Gaughan (1985)
- Jan of the Jungle (1966)
- Jana [French] (1971)
- Je m'appelais Croc-Blanc [2] [French] (1967)
- Je m'appelais Croc-Blanc [4] [French] (1967)
- Je m'appelais Croc-Blanc [5] [French] (1967)
- Je m'appelais Croc-Blanc [6] [French] (1967)
- Je m'appelais Croc-Blanc [7] [French] (1967)
- Jewel of Jarhen (frontispiece) (1974)
- Jill The Giant-Killer (1975)
- Jill The Giant-Killer [2] (1975)
- Jill The Giant-Killer [3] (1975)
- Jondelle (frontispiece) (1973)
- Jorslem [French] (1969)
- Jorslem [2] [French] (1969)
- Jorslem [3] [French] (1969)
- Journey (1972)
- Judgment on Janus (1969)
- Julian (1978)
- Jungle Substitute (1964)
- Jungle Substitute [2] (1964)
- Jupiter One (1976)
- Just a Matter of Time (1973)
- Kalin (title page) (1969)
- Kar Kaballa (frontispiece) (1969)
- Key Out of Time (1963)
- Kill Me with Kindness (1958)
- Kill the Dead (frontispiece) (1980)
- Kin to Kaspar Hauser (1977)
- Kin to Kaspar Hauser [2] (1977)
- Kindergarten (1970)
- Kindergarten [2] (1970)
- King of Argent (frontispiece) (1973)
- King of the World's Edge (1966)
- L'autre jungle [French] (1966)
- L'autre jungle [2] [French] (1966)
- L'essaim de pierres [French] (1966)
- L'essaim de pierres [2] [French] (1966)
- L'essaim de pierres [3] [French] (1966)
- L'essaim de pierres [4] [French] (1966)
- L'essaim de pierres [5] [French] (1966)
- L'essaim de pierres [6] [French] (1966)
- L'essaim de pierres [7] [French] (1966)
- L'homme du futur [French] (1957)
- L'homme du futur [2] [French] (1957)
- L'homme du futur [3] [French] (1957)
- L'ixe de l'I grec [French] (1958)
- L'odyssée de Lucifer [French] (1968)
- L'odyssée de Lucifer [2] [French] (1968)
- L'odyssée de Lucifer [3] [French] (1968)
- L'odyssée de Lucifer [4] [French] (1968)
- L'ordre règne [French] (1970)
- L'ordre règne [2] [French] (1970)
- L'étoile des profondeurs [French] (1969)
- L'étoile des profondeurs [2] [French] (1969)
- La Befana (1973) with Dan Adkins
- La chose dans la pierre [French] (1971)
- La chose dans la pierre [2] [French] (1971)
- La chose dans la pierre [3] [French] (1971)
- La cité dans la mer [French] (1967)
- La cité dans la mer [2] [French] (1967)
- La dame aux manches vertes [French] (1957)
- La dame aux manches vertes [2] [French] (1957)
- La dame aux manches vertes [3] [French] (1957)
- La dernière nuit du festival [French] (1971)
- La Grande Barre [French] (1970)
- La mia des miennes [French] (1970)
- La planète de l'oubli [French] (1967)
- La planète de l'oubli [2] [French] (1967)
- La planète de l'oubli [3] [French] (1967)
- La planète de l'oubli [4] [French] (1967)
- La région intermédiaire [French] (1971)
- La sensation [French] (1968)
- La tour des damnés [French] (1968)
- Lamarchos (frontispiece) (1978)
- Land Beyond the Map (1965)
- Last Hunt (1979)
- Latent Image (1983)
- Le bébé géant [French] (1965)
- Le bébé géant [2] [French] (1965)
- Le choix d'un monde [French] (1957)
- Le château de lumière [French] (1968)
- Le château de lumière [2] [French] (1968)
- Le château de lumière [3] [French] (1968)
- Le dernier château [French] (1966)
- Le dernier château [2] [French] (1966)
- Le dernier château [3] [French] (1966)
- Le dernier château [4] [French] (1966)
- Le dernier château [5] [French] (1966)
- Le feu bleu [French] (1966)
- Le feu bleu [2] [French] (1966)
- Le gouverneur de Glave [French] (1966)
- Le jardin des délices [French] (1969)
- Le jardin des délices [2] [French] (1969)
- Le jour du ptéranodon [French] (1971)
- Le jour du ptéranodon [2] [French] (1971)
- Le langage de l'amour [French] (1957)
- Le masque du berserker rouge [French] (1967)
- Le masque du berserker rouge [2] [French] (1967)
- Le monde de Thorinn [French] (1969)
- Le monde de Thorinn [2] [French] (1969)
- Le monde de Thorinn [3] [French] (1969)
- Le monde de Thorinn [4] [French] (1969)
- Le météore (Part 1 of 2) [French] (1970)
- Le météore (Part 1 of 2) [2] [French] (1970)
- Le météore (Part 1 of 2) [3] [French] (1970)
- Le météore (Part 2 of 2) [French] (1970)
- Le pays d'esprit [French] (1964)
- Le sorcier d'Anharitte (Part 1 of 3) [French] (1973)
- Le tueur géant [French] (1971)
- Le tueur géant [2] [French] (1971)
- Legacy (1980)
- Les filous de la galaxie [French] (1965)
- Les guerriers de lumière [French] (1966)
- Les guerriers de lumière [2] [French] (1966)
- Les maîtres des dragons [French] (1965)
- Les maîtres des dragons [2] [French] (1965)
- Les maîtres des dragons [3] [French] (1965)
- Les maîtres des dragons [4] [French] (1965)
- Les maîtres des dragons [5] [French] (1965)
- Les maîtres des dragons [6] [French] (1965)
- Les maîtres des dragons [7] [French] (1965)
- Les maîtres des dragons [8] [French] (1965)
- Les robots sont là ! [French] (1969)
- Les élus de Vénus [French] (1967)
- Les élus de Vénus [2] [French] (1967)
- Les élus de Vénus [3] [French] (1967)
- Les élus de Vénus [4] [French] (1967)
- Let Darkness Fall (1975)
- Life Cycle (1970)
- Life Force (1974)
- Life Matter (1969)
- Life Probe (1983)
- Like Unto the Locust (Part 1 of 2) (1979)
- Like Unto the Locust (Part 1 of 2) [2] (1979)
- Like Unto the Locust (Part 1 of 2) [3] (1979)
- Like Unto the Locust (Part 1 of 2) [4] (1979)
- Like Unto the Locust (Part 1 of 2) [5] (1979)
- Like Unto the Locust (Part 2 of 2) (1980)
- Like Unto the Locust (Part 2 of 2) [2] (1980)
- Like Unto the Locust (Part 2 of 2) [3] (1980)
- Like Unto the Locust (Part 2 of 2) [4] (1980)
- Limbo (1963)
- Limits (1981)
- Little Game (1974)
- Locus #112 (1972)
- Locus #114 (1972)
- Locus #70 (1970)
- Locus #70 [2] (1970)
- Lonely Roads (1986)
- Long Live Lord Kor! (1970)
- Longshot (1979)
- Lord Kalvan of Otherwhen (1965)
- Lord of the Green Planet (1967)
- Lords of the Starship (map) (1967)
- Lords of the Starship (title page) (1967)
- Lore of the Witch World (frontispiece) (1980)
- Lost and Found (1980)
- Luna One (1973)
- Malf (1976)
- Malf [2] (1976)
- Man with a Past (1977)
- Mandroid (1966)
- Manfire (1965)
- Manfire [2] (1965)
- Manfire [3] (1965)
- Manfire [4] (1965)
- Manfire [5] (1965)
- Manhounds of Antares (1974)
- Mankind Under the Leash (1966)
- Map for "The Tower" (1967)
- Mars Child (1985)
- Mars Masked (1979)
- Mars Masked [2] (1979)
- Mars Masked [3] (1979)
- Mars Masked [4] (1979)
- Marsman Meets the Almighty (1975)
- Marsman Meets the Almighty [2] (1975)
- Marsman Meets the Almighty [3] (1975)
- Martian Walkabout (1980)
- Martyr (1973)
- Masque of the Red Shift (1965)
- Masters of the Lamp (frontispiece) (1970)
- Mauvais destin [French] (1958)
- Mauvais destin [2] [French] (1958)
- Mauvais destin [3] [French] (1958)
- Mayenne (frontispiece) (1973)
- Mayenne and Jondelle (frontispiece) (1981)
- Mayflower I (1972)
- Mayflower II (1973)
- Mayflower Three (1973)
- Me-Too (1970)
- Meccano (1968)
- Mention My Name in Atlantis (frontispiece) (1972)
- Mercenary from Tomorrow (frontispiece) (1968)
- Merlin's Mirror (frontispiece) (1975)
- Message from the Eocene (1964)
- Metropolis (title page) (1963)
- Midsummer Century (frontispiece) (1974)
- Mightiest Qorn (1963)
- Mindship (frontispiece) (1974)
- Mining the Moon (1983)
- Mirror Image (frontispiece) (1972)
- Mistaken for Granted (1974)
- Monday Begins on Saturday (frontispiece) (1977)
- Monitor Found in Orbit (frontispiece) (1974)
- Monkey Business (1983)
- Monster (1967)
- Monster of Metelaze (frontispiece) (1973)
- Monsters in Orbit (1965)
- Moon Base (1964)
- Moon of Three Rings (1967)
- Moondust (frontispiece) (1968)
- Moppet (1983)
- Movers and Shakers (1979)
- Mr. Jester (1966)
- Muck Man (1963)
- Mulvan (map) (1968)
- Murder Beneath the Polar Ice (1960)
- Mutability (1980)
- My Lady Greensleeves (1957)
- My Lady Greensleeves [2] (1957)
- My Lady Greensleeves [3] (1957)
- Naked to the Stars (frontispiece) (1977)
- Nanda (1972)
- Nanda [2] (1972)
- Nascent (1975)
- Nascent [2] (1975)
- Nascent [3] (1975)
- Nebula Alert (1967)
- Necromancer (1978)
- Necromancer (frontispiece) (1978)
- Nemo (1973)
- Neutron Tide (1970)
- New Worlds (1962)
- New Worlds [bc] (1962)
- Next Time (1973)
- Nightflyers (1981)
- Nightwings (1968)
- Nightwings [2] (1968)
- Nightwings [3] (1968)
- No Planet Like Home (1970)
- Nobody Likes to Be Lonely (1975)
- Noepti-Noe (1972)
- None But I (1969)
- Nostradamus (1974)
- Nostro Servizio Particolare [Italian] (1958)
- Not by Sea (1966)
- Notes from a Cyclical Housewife's Diary (1968)
- Notes from the General Secretariat (1985)
- Nothing for Nothing (1979)
- Now No One Waits (1969)
- Nycon Comics, No. 2 (cover) (2013)
- O Kind Master [2] (1970)
- Occam's Scalpel (1971)
- Ocean On Top (frontispiece) (1973)
- Océanique [French] (1967)
- Océanique [2] [French] (1967)
- ODD, #1 (cover) (1949)
- Oeil pour... quoi ? [French] (1957)
- Oeil pour... quoi ? [2] [French] (1957)
- Oeil pour... quoi ? [3] [French] (1957)
- Of All Possible Worlds (1956)
- Of Death What Dreams [2] (1970)
- Of Godlike Power (Part 1 of 2) (1965)
- Of Godlike Power (Part 1 of 2) [2] (1965)
- Of Godlike Power (Part 1 of 2) [3] (1965)
- Of Godlike Power (Part 2 of 2) (1965)
- Of Godlike Power (Part 2 of 2) [2] (1965)
- Of Godlike Power (Part 2 of 2) [3] (1965)
- Of Godlike Power (Part 2 of 2) [4] (1965)
- Of Godlike Power (Part 2 of 2) [5] (1965)
- Off Center (1965)
- Old Folks at Home (1980)
- Old Folks at Home [2] (1980)
- On Conquered Earth (1967)
- On the Account (1973)
- On the Outside, Looking In (1983)
- On the Outside, Looking In [2] (1983)
- On the Sand Planet (1965)
- On the Sand Planet [2] (1965)
- On the Sand Planet [3] (1965)
- On Venus the Thunder Precedes the Lightning (1971)
- Once Around Arcturus (1962)
- Once On Aranea (1973)
- One and One Are Two (1972)
- One on Me (frontispiece) (1980)
- One-Generation New World (1971)
- One-Generation New World [2] (1971)
- Opening Night (1976)
- Opening Night [2] (1976)
- Operation Stinky (1957)
- Operation Stinky [2] (1957)
- Operation Stinky [3] (1957)
- Operation Time Search (title page) (1969)
- Opération Putois [French] (1957)
- Opération Putois [2] [French] (1957)
- Opération Putois [3] [French] (1957)
- Oracle For a White Rabbit (1969)
- Orbitsville (Part 3 of 3) (1974)
- Our Man in Peking (1967)
- Our Man in Peking [2] (1967)
- Our Man in Peking [3] (1967)
- Our Man in Peking [4] (1967)
- Our Man in Space (1965)
- Out of Phase (1969)
- Out of Phase [2] (1969)
- Outermost: The Art + Life of Jack Gaughan (2010)
- Outside the Universe (1964)
- Outside the Universe (Ace Books, 1964, interior art) (1964)
- Override (1973)
- Override [2] (1973)
- P. Fogg (1973)
- Pandora's Planet (frontispiece) (1973)
- Paradoxes [French] (1957)
- Parthen (1973)
- Particle Theory (1979)
- Passages (1974)
- Passerby (1969)
- Patrol Team (1982)
- Patrol Team [2] (1982)
- Patron of the Arts (1965)
- Patterns of Chaos (Part 1 of 3) (1972)
- Patterns of Chaos (Part 2 of 3) (1972)
- Pegasus Two (1971)
- Pegasus Two [2] (1971)
- Pendulum (frontispiece) (1978)
- Perfect Match (1971)
- Perfection (1983)
- Perpendicular Worlds (1984)
- Perpetual Motion (1967)
- Perris [French] (1969)
- Perris [2] [French] (1969)
- Perris [3] [French] (1969)
- Perris Way (1968)
- Perris Way [2] (1968)
- Perris Way [3] (1968)
- Persephone and Hades (1973)
- Phoenix Prime ~ & the Books of Qar (1968) with Roy G. Krenkel
- Phoenix Ship (frontispiece) (1969)
- Physician to the Universe (1963)
- Physician to the Universe [2] (1963)
- Pigeon City (1972)
- Pigeon City [2] (1972)
- Pigeon City [3] (1972)
- Pine Castle (1983)
- Pinocchio (1977)
- Pinocchio [2] (1977)
- Pixie Dixon and the Mystery of the Haunted Playpen (1982)
-
Pièges?Pieges[French] (1972)
- Planet of Dread (frontispiece) (1974)
- Planet of Exile (frontispiece) (1966)
- Planet of Forgetting (1965)
- Planet of Forgetting [2] (1965)
- Planet of Forgetting [3] (1965)
- Planet of Forgetting [4] (1965)
- Planet Probability (frontispiece) (1973)
- Planetary Agent X (frontispiece) (1965)
- Plaything (1974)
- Poems (1974)
- Point Oméga [French] (1966)
- Point Oméga [2] [French] (1966)
- Point Oméga [3] [French] (1966)
- Point Oméga [4] [French] (1966)
- Portions of This Program... (1977)
- Postmarked the Stars (frontispiece) (1969)
- Pow Wow (1975)
- Power Complex (1972)
- Power Play (1970)
- Pressure Vessel (1970)
- Price of Honor (1973)
- Priest of the Baraboo (1979)
- Priest of the Baraboo [2] (1979)
- Priest of the Baraboo [3] (1979)
- Prince of Scorpio (1974)
- PRoblem (1956)
- Progeny of the Adder (1968)
- Project Jove (frontispiece) (1971)
- Projections (1976)
- Projections [2] (1976)
- Promise Them Anything (1973)
- Promised Land (frontispiece) (1974)
- Protecteur des arts [French] (1968)
- Protest (1974)
- Proud Rider (1979)
- Psychotic, January 1968 (1968) with William Rotsler
- Psychotic, March 1968 (1968) with John D. Berry and Dick Flinchbaugh and Ray Nelson and Carol Peters and Andrew Porter and William Rotsler and Steve Stiles and Bjo Trimble
- Psychotic, May 1968 (1968) with John D. Berry and Ray Nelson and William Rotsler and Mike Symes and Stan Taylor
-
Psychotic, September 1968 (1968)
with
Al Andrews
and
Richard Bergeron
and
John D. Berry
and
Vaughn Bodé?Vaughn Bodeand Ross Chamberlain and Bob Kellog and Doug Lowenstein and Ray Nelson and William Rotsler and Steve Stiles and Mike Symes
- Pure Gold (1977)
- Pursuit of the Screamer (frontispiece) (1978)
- Quag Keep (frontispiece) (1979)
- Quand l'oracle a parlé... [French] (1969)
- Quand l'oracle a parlé... [2] [French] (1969)
- Quest Crosstime (1966)
- Quest for the White Witch (1978)
- Quest of the Dawn Man (1964)
- Quickening (1973)
- Quicksand (frontispiece) (1976)
- Quiddities (1983)
- Quiddities [2] (1983)
- Quota for Conquest (1957)
- Rainy Day Revolution No. 39 (1967)
- Reality Doll (Complete Novel) (1971)
- Reality Forbidden (1967)
- Rebel of Antares (1980)
- Recoil (frontispiece) (1971)
- Rendezvous with Rama (Part 2 of 2) (1973)
- Renegade of Kregen (1976)
- Research Alpha (1965)
- Retief of the Red-Tape Mountain (1962)
- Retief's War (1965)
- Retief's War (Part 1 of 3) (1965)
- Retief's War (Part 2 of 3) (1965)
- Retief, God-Speaker (1965)
- Retief, Insider (1971)
- Retief, the Long-Awaited Master (1969)
- Retief, War Criminal (1967)
- Rhapsody in Black (frontispiece) (1973)
- Ride a Tin Can (1970)
- Rim Change (1975)
- Rim Change [2] (1975)
- Rim Change [3] (1975)
- Rime Isle (Part 2 of 2) (1977) with Freff
- Rivers of Damascus (1974)
- Riverworld (1966)
- Riverworld [2] (1966)
- Robbie and David and Little Dahl (1972)
- Rocannon's World (1966)
- Rogue Dragon (1965)
- Rogue Queen (1965)
- Rogue Ship (1980)
- Rogue Ship (frontispiece) (1980)
- Rogue Star (Part 1 of 3) (1968)
- Rogue Star (Part 2 of 3) (1968)
- Rogue Star (Part 3 of 3) (1968)
- Rogue's Gambit (1968)
- Rorqual Maru (1972)
- Rotating Cylinders and the Possibility of Global Causality Violation (1977)
- S.O.S. From Three Worlds (title page) (1967)
- Saga of Lost Earths (title page) (1966)
- Saga of Lost Earths and The Star Mill (frontispiece) (1979)
- Sales of a Deathman (1968)
- Sanctuary (1976)
- Santa Titicaca (1970)
- Sargasso of Space (frontispiece) (1971)
- Satisfaction Guaranteed (1961)
- Schrödinger's Cat (1981)
- Schrödinger's Plague (1982)
- Science Fiction Around the World (1967)
- Science Fiction Review, April 1969 (1969)
- Science Fiction Review, April 1969 [10] (1969)
- Science Fiction Review, April 1969 [11] (1969)
- Science Fiction Review, April 1969 [2] (1969)
- Science Fiction Review, April 1969 [3] (1969)
- Science Fiction Review, April 1969 [4] (1969)
- Science Fiction Review, April 1969 [5] (1969)
- Science Fiction Review, April 1969 [6] (1969)
- Science Fiction Review, April 1969 [7] (1969)
- Science Fiction Review, April 1969 [8] (1969)
- Science Fiction Review, April 1969 [9] (1969)
- Science Fiction Review, August 1969 (1969)
- Science Fiction Review, August 1970 (1970)
- Science Fiction Review, December 1969 (1969) with ATom and George Foster, Jr. and Michael Gilbert and Cynthia Goldstone and Jay Kinney and Tim Kirk and Dave Lovenstein and William Rotsler and James Shull and Bernie Zuber
- Science Fiction Review, January 1971 (1971)
- Science Fiction Review, January 1971 [2] (1971)
- Science Fiction Review, March 1971 (1971)
- Science Fiction Review, March 1971 [2] (1971)
- Science Fiction Review, November 1968 (1968)
- Science Fiction Review, November 1968 [2] (1968)
- Science Fiction Review, November 1968 [3] (1968)
- Science Fiction Review, November 1968 [4] (1968)
- Science Fiction Review, October 1969 (1969) with John D. Berry and Ross Chamberlain and Stephen Fabian and Dick Flinchbaugh and Michael Gilbert and Doug Lovenstein and William Rotsler and James Shull and Bob Smith (II)
- Scramble (1971)
- Scratches in the Dark (1982)
- Seasonal Special (1984)
- Second Advent (1974)
- Second Run at the Data (1971)
- Second-Hand Smoke (1984)
- Second-Hand Stonehenge (1970)
- Second-Hand Stonehenge [2] (1970)
- Seedling From the Stars (1970)
- Seeker of the Way (1976)
- Seetee Alert! (frontispiece) (1974)
- Selling the Promised Land (1977)
- Sentience (1973)
- September Song (1980)
- Servants of the Wankh (frontispiece) (1979)
- Seven American Nights (1980)
- Seven American Nights [2] (1980)
- Seven Doors to Education (1961)
- Seventy Years of Decpop (1972)
- Shadow Hawk (1964)
- Shall We Have a Little Talk? (1965)
- Shall We Have a Little Talk? [2] (1965)
- Shausta (1972)
- She Still Do (1970)
- Sheltering Dream (1972)
- Ship Me Tomorrow (1970)
- Shipwright (1978)
- Shooting Iron (1984)
- Short Scrolls (Amra V2n56, June 1972) (1972) with Alicia Austin and Roy G. Krenkel and L. J. Spaulding
- Showcase (Galaxy, July 1976) (1976)
- Showcase (Galaxy, October 1974) (1974)
- Showcase: Merlin and the Dragon (1975)
- Silicon Muse (1984)
- Silicon Muse [2] (1984)
- Silkies in Space (1966)
- Silver to Bronze - Over (1972)
- Silverlock (title page) (1966)
- Singularity (1978)
- Singularity [2] (1978)
- Singularity Station (frontispiece) (1973)
- Sittik (1970)
- Six Gates to Limbo (Part 1 of 2) (1969)
- Six Gates to Limbo (Part 2 of 2) (1969)
- Six Men from Alpha (1973)
- Sketches for Andre Norton's "Quag Keep" (1978)
- Skweem Nord, Skweem Sud [French] (1972)
- Slave Ship from Sergan (frontispiece) (1973)
- Sleeping Beauty (1970)
- Small One (1965)
- Small Talent (1979)
- Snow White and the Giants (Part 1 of 4) (1966)
- Snow White and the Giants (Part 2 of 4) (1966)
- Snow White and the Giants (Part 3 of 4) (1966)
- Snow White and the Giants (Part 4 of 4) (1967)
- Snowflake (1981)
- So Bright the Vision (frontispiece) (1968)
- Some Joys Under the Star (1973)
- Son of the Tree (1964)
- Space Bounce (1973)
- Space Mercenaries (1965)
- Spacehawk, Inc. (frontispiece) (1974)
- Spacehounds of IPC (1966)
- Spawn of Laban (frontispiece) (1974)
- Speculation (1976)
- Speculation [2] (1976)
- Spell of the Witch World (frontispiece) (1972)
- Squatter's Rights (1968)
- St. Louiscon Members (1969)
- Star Bike (1968)
- Star Courier (frontispiece) (1977)
- Star Crossing (1971)
- Star Hunter & Voodoo Planet (1968)
- Star Loot (frontispiece) (1980)
- Star Magician (1968)
- Star of Danger (1965)
- Star Quest (frontispiece) (1968)
- Star Seeder (1969)
- Star Winds (frontispiece) (1978)
- Stardance (1979)
- Starmasters' Gambit (frontispiece) (1973)
- Stars in My Pocket Like Grains of Sand (excerpt) (1980)
- Starsong (1968)
- Stepson to Creation (1977)
- Stone Place (1965)
- Stormqueen! (frontispiece) (1978)
- Strange Doings (frontispiece) (1973)
- Stranger in Paradise (1974)
- Stranger Than You Think (frontispiece) (1965)
- Stress Pattern (frontispiece) (1974)
- Study for "World of the Starwolves" (1969)
- Subway to the Stars (1968)
- Subway to the Stars [2] (1968)
- Subway to the Stars [3] (1968)
- Support Your Local Police (1973)
- Survival Kit (1957)
- Survival Kit [2] (1957)
- Survival Kit [3] (1957)
- Sus aux Krultchs ! [French] (1969)
- Sus aux Krultchs ! [2] [French] (1969)
- Sus aux Krultchs ! [3] [French] (1969)
- Sus aux Krultchs ! [4] [French] (1969)
- Susies' Reality (1973)
- Swan Song (frontispiece) (1975)
- Swap (1970)
- Sweet Sister, Green Brother (1973)
- Sword and Scepter (Part 1 of 2) (1973)
- Sword and Scepter (Part 1 of 2) [2] (1973)
- Sword and Scepter (Part 1 of 2) [3] (1973)
- Sword and Scepter (Part 2 of 2) (1973)
- Sword and Scepter (Part 2 of 2) [2] (1973)
- Sword and Scepter (Part 2 of 2) [3] (1973)
- Swordsmen in the Sky (1964)
- Swordsmen of the Stars (1967)
- Syncope and Fugue (1975)
- Syncope and Fugue [2] (1975)
- Take the B Train [2] (1969)
- Tama of the Light Country (1965)
- Tama, Princess of Mercury (1966)
- Target of Opportunity (1974)
- Target: Terra (frontispiece) (1968)
- Technos (frontispiece) (1972)
- Teddy Bear (1970)
- Telemart 3 (1970)
- Teratohippus (1972)
- Testament XXI (1973)
- That P.O. Box in Schenectady That You've All Heard So Much About (1982)
- The 63rd of August (1977)
- The 9 To 5 Wizard (1985)
- The Aerial Machine (1974)
- The Age of Ruin (1968)
- The Agent (1971)
- The Airs of Earth (1986)
- The All-Together Planet (1971)
- The Altar on Asconel (1965)
- The Alternate Martians (1965)
- The Annihilation of Angkor Apeiron (1975)
- The Arsenal of Miracles (1964)
- The Arsenal Out of Time (1967)
- The Arsenal Out of Time (title page) (1967)
- The Atom Conspiracy (1966)
- The Atom Conspiracy (frontispiece) (1966)
- The August Revolution (1974)
- The Avengers of Carrig (frontispiece) (1980)
- The Baby (1974)
- The Backward Look (1979)
- The Backward Look [2] (1979)
- The Ballad of Beta-2 (1965)
- The Banks Deposit: Prozine Commentary (Science Fiction Review, April 1970) (1970)
- The Barbarian of World's End (frontispiece) (1977)
- The Barbie Murders (1978)
- The Barbie Murders [2] (1978)
- The Barbie Murders [3] (1978)
- The BASIC Universe (1985)
- The Beast that Shouted Love (1968)
- The Beasts of Kohl (1966)
- The Best from Fantasy and Science Fiction, Tenth Series (title page) (1965)
- The Best From Fantasy and Science Fiction: 9th Series (1964)
- The Best of Fantasy & Science Fiction: 12th Series (1967)
- The Big Black Bag (1981)
- The Big Black Mark (frontispiece) (1975)
- The Big Jump (1967)
- The Big Tin God (1967)
- The Bitter Bread (1975)
- The Bitter Bread [2] (1975)
- The Bitter End (1978)
- The Black Mountains (1971)
- The Black Star Passes (1965)
- The Blind Worm (1970)
- The Bloody Sun (1964)
- The Bodelan Way (frontispiece) (1974)
- The Book of Andre Norton (frontispiece) (1975)
- The Book of Baraboo (1980)
- The Book of Baraboo [2] (1980)
- The Book of Baraboo [3] (1980)
- The Book of Baraboo [4] (1980)
- The Book of Baraboo [5] (1980)
- The Book of Baraboo [6] (1980)
- The Book of Dreams (frontispiece) (1981)
- The Book of Frank Herbert (frontispiece) (1973)
- The Book of Fritz Leiber (frontispiece) (1974)
- The Book of Gordon Dickson (frontispiece) (1973)
- The Book of John Brunner (frontispiece) (1976)
- The Book of Philip José Farmer or The Wares of Simple Simon's Custard Pie and Space Man (1973)
- The Book of Philip K. Dick (frontispiece) (1973)
- The Book of Rack the Healer (Part 1 of 2) (1972)
- The Book of Saberhagen (frontispiece) (1975)
- The Book of van Vogt (frontispiece) (1972)
- The Boy Who Cried Werewolf (1982)
- The Boy Who Cried Werewolf [2] (1982)
- The Brain Pirates (1966)
- The Brain Stealers of Mars (1966)
- The Brains of Earth (1966)
- The Brass Dragon (frontispiece) (1969)
- The Bridge [2] (1970)
- The Bright Companion (frontispiece) (1980)
- The Broken Lands (title page) (1968)
- The Bulletin of the Science Fiction Writers of America, August 1976 (1976)
- The Bulletin of the Science Fiction Writers of America, July 1975 (1975) with William Rotsler and Barry Schneider and Donald Simpson
- The Bulletin of the Science Fiction Writers of America, June 1976 (1976) with Greg Bear and Diane Duane and Ruth Rigel and William Rotsler and Barry Schneider
- The Bulletin of the Science Fiction Writers of America, March 1976 (1976)
- The Bulletin of the Science Fiction Writers of America, November 1971 (1971)
- The Bulletin of the Science Fiction Writers of America, October 1975 (1975) with William Rotsler and Barry Schneider and Donald Simpson
- The Bulletin of the Science Fiction Writers of America, October 1976 (1976)
- The Bulletin of the Science Fiction Writers of America, September 1971 (1971)
- The Business Side of Writing (1975)
- The Cast-Iron Rat (1972)
- The Castaways of Tanagar (frontispiece) (1981)
- The Castle of Light (1964)
- The Castoffs (1972)
- The Caves of Mars (1965)
- The Cerebrated Jumping Frog (1975)
- The Child's Story (1977)
- The City Machine (frontispiece) (1972)
- The City of the Sun (frontispiece) (1978)
- The City of Ul Chalan (1973)
- The City of Ul Chalan [2] (1973)
- The City of Ul Chalan [3] (1973)
- The City of Ul Chalan [4] (1973)
- The City That Grew in the Sea (1964)
- The Closed Worlds (frontispiece) (1968)
- The Collected Stories Of Roger Zelazny (frontispiece portrait) (2009)
- The Colony That Failed (1964)
- The Coming Age of Soviet Science Fiction (1968)
- The Communipaths (frontispiece) (1970)
- The Computer Conspiracy (Part 1 of 2) (1968)
- The Computer Conspiracy (Part 2 of 2) (1968)
- The Cool War (1979)
- The Cool War [2] (1979)
- The Cool War [3] (1979)
- The Cool War [4] (1979)
- The Cool War [5] (1979)
- The Cosmic Computer (1964)
- The Country Boy (1965)
- The Crack in Space (1966)
- The Crayfish (1970)
- The Crayfish [2] (1970)
- The Crippled Swan (1982)
- The Crystal Ball (1984)
- The Crystal Ball [2] (1984)
- The Crystal Gryphon (frontispiece) (1973)
- The Cube (1970)
- The Dark Dimensions (frontispiece) (1971)
- The Dark Intruder & Other Stories (1964)
- The Day Before the Revolution (1974)
- The Day of the Gringo (1975)
- The Day of the Klesh (frontispiece) (1979)
- The Day of the Star Cities (1965)
- The Day the World Ended (1964)
- The Deadly Thing at 2.4 Kilo-Parsecs (1984)
- The Deceivers (1968)
- The Decision Makers (1965)
- The Decision Makers [2] (1965)
- The Deicides (1980)
- The Demon Queen (1984)
- The Desert and the Stars (1962)
- The Devil on Salvation Bluff (1965)
- The Devolutionist and the Emancipatrix (frontispiece) (1965)
- The Digital Dictator (1982)
- The Dirdir (frontispiece) (1979)
- The Disciples of Cthulhu (frontispiece) (1976)
- The Disposal Man (1967)
- The Doomsday Gene (Part 1 of 2) (1973)
- The Doomsday Gene (Part 2 of 2) (1973)
- The Doors of His Face, the Lamps of His Mouth (1967)
- The Double Invaders (1967)
- The Double Minds (1966)
- The Dragon Masters (1962)
- The Dragon Masters [10] (1962)
- The Dragon Masters [2] (1962)
- The Dragon Masters [3] (1962)
- The Dragon Masters [4] (1962)
- The Dragon Masters [5] (1962)
- The Dragon Masters [6] (1962)
- The Dragon Masters [7] (1962)
- The Dragon Masters [8] (1962)
- The Dragon Masters [9] (1962)
- The Dream Machine (1970)
- The Dream Machine [2] (1970)
- The Dream Machine [3] (1970)
- The Dream Machine [4] (1970)
- The Dream Machine [5] (1970)
- The Dream Master (1966)
- The Dream Millennium (Part 1 of 3) (1973)
- The Dream Millennium (Part 2 of 3) (1973)
- The Dream Millennium (Part 3 of 3) (1973)
- The Dreamworld of H.P. Lovecraft (map) (1967)
- The Duplicators (1964)
- The Durable Man (1974)
- The Dwarfs of Zwergwelt (1972)
- The Eater of Worlds (frontispiece) (1974)
- The Einstein Intersection (title page) (1967)
- The Electric Sword-Swallowers (frontispiece) (1971)
- The Enchanted Forest (1964)
- The Epsilon Problem (1967)
- The Escape Orbit (1965)
- The Eskimo Invasion (1966)
- The Eskimo Invasion [2] (1966)
- The Ethics of Trade (1970)
- The Executive Rat (1972)
- The Exile of Time (1965)
- The Eyes of Bolsk (frontispiece) (1969)
- The Eyes of the Overworld (1966)
- The Fabulous Riverboat (Part 1 of 2) (1971)
- The Fabulous Riverboat (Part 2 of 2) (1971)
- The Faded Sun: Shon'jir (frontispiece) (1979)
- The Fairly Civil Service (1967)
- The Fall of Chronopolis (frontispiece) (1974)
- The Fall of the Dream Machine (frontispiece) (1969)
- The Far King (1978)
- The Far King (1978)
- The Far King [2] (1978)
- The Far King [2] (1978)
- The Feeling (1961)
- The Felled Star (1967)
- The Felled Star (Part 2 of 2) (1967)
- The Fellowship of the Ring (title page) (1965)
- The Fenris Device (frontispiece) (1974)
- The Final Circle of Paradise (frontispiece) (1976)
- The Final Circle of Paradise (frontispiece) (1979)
- The Five Gold Bands (frontispiece) (1980)
- The Fortress Unvanquishable, Save for Sacnoth (map) (1967)
- The Founding of Civilization (1968)
- The Four-Hour Fugue (1974)
- The Furies (1967)
- The Galactic Calabash (1965)
- The Galaxy Primes (1965)
- The Game-Players of Titan (title page) (1963)
- The Gameplayers of Zan (frontispiece) (1977)
- The Ganymede Takeover (1967)
- The Garden of Ease (1968)
- The Garden of Ease [2] (1968)
- The Garden of Ease [3] (1968)
- The Garments of Caean (1980)
- The Gates of Creation (frontispiece) (1966)
- The Gates of Time (frontispiece) (1970)
- The Genetic Buccaneer (frontispiece) (1974)
- The Genius Heap (1956)
- The Geometry of Narrative (1983)
- The Gholan Gate (frontispiece) (1974)
- The Ghosts of Epidoris (frontispiece) (1975)
- The Ginger Star (Part 1 of 2) (1974)
- The Girl and the Dolphin (1973)
- The Girl in his Mind (1963)
- The Girl in his Mind [2] (1963)
- The Girl in the Gem (map) (1967)
- The Girl With a Symphony in Her Fingers (1974)
- The Goblin Tower (map) (1968)
- The Gods Themselves (Part 2 of 3) (1972)
- The Gods Themselves (Part 3 of 3) (1972)
- The Golden People (1964)
- The Governor of Glave (1963)
- The Grand Illusions (1972)
- The Grater Monster (1949)
- The Graveyard Heart (1967)
- The Great Doomed Ship (1964)
- The Great Doomed Ship [2] (1964)
- The Green Brain (1966)
- The Halcyon Drift (frontispiece) (1972)
- The Hand is Quicker (1973)
- The Hannes Bok Memorial Showcase of Fantasy Art (1974)
- The Hannes Bok Memorial Showcase of Fantasy Art [2] (1974)
- The Haunted Corpse (1957)
- The Hawks of Arcturus (frontispiece) (1974)
- The Heritage of Hastur (frontispiece) (1975)
- The Heritage of Hastur (frontispiece) (1975)
- The Hero (1971)
- The Hero of Downways (frontispiece) (1973)
- The Herod Men (frontispiece) (1971)
- The Hole Man (1974)
- The Holmes-Ginsbook Device (1968)
- The Hook, the Eye and the Whip (1974)
- The Hot and Cold Running Waterfall (1980)
- The House of Compassionate Sharers (1979)
- The Houses of Iszm (1964)
- The Howling Bounders (1966)
- The Hunter Out of Time (1965)
- The If Reader of Science Fiction (1966)
- The IFTH of OOFTH (1957)
- The Immortality Seekers (1966)
- The Indian Giver (Part 1 of 3) (1974)
- The Indian Giver (Part 1 of 3) [2] (1974)
- The Indian Giver (Part 1 of 3) [3] (1974)
- The Indian Giver (Part 1 of 3) [4] (1974)
- The Indian Giver (Part 1 of 3) [5] (1974)
- The Indian Giver (Part 1 of 3) [6] (1974)
- The Indian Giver (Part 1 of 3) [7] (1974)
- The Indian Giver (Part 1 of 3) [8] (1974)
- The Indian Giver (Part 1 of 3) [9] (1974)
- The Indian Giver (Part 2 of 3) (1974)
- The Indian Giver (Part 2 of 3) [2] (1974)
- The Indian Giver (Part 2 of 3) [3] (1974)
- The Indian Giver (Part 2 of 3) [4] (1974)
- The Indian Giver (Part 2 of 3) [5] (1974)
- The Indian Giver (Part 2 of 3) [6] (1974)
- The Indian Giver (Part 2 of 3) [7] (1974)
- The Indian Giver (Part 3 of 3) (1975)
- The Indian Giver (Part 3 of 3) [2] (1975)
- The Indian Giver (Part 3 of 3) [3] (1975)
- The Indian Giver (Part 3 of 3) [4] (1975)
- The Indian Giver (Part 3 of 3) [5] (1975)
- The Initiation (1979)
- The Insect Warriors (1965)
- The Island of the Crabs (1968)
- The Jagged Pink Marshmallow Kid (1970)
- The Janus Equation (1980)
- The Jaws That Bite, the Claws That Catch (frontispiece) (1975)
- The Jewels of Aptor (title page) (1962)
- The Joan-of-Arc Replay (frontispiece) (1978)
- The Junk Man Cometh (1966)
- The Kar-Chee Reign (1966)
- The Keeper's Price and Other Stories (1980)
- The Key to Venudine (1968)
- The Killers (1975)
- The Killing Machine (frontispiece) (1978)
- The King in Yellow (title page) (1965)
- The King of Thieves (1966)
- The Kingdom of Genghir (map) (1967)
- The Kingdom of Poyana (map) (1979)
- The Kokod Warriors (1966)
- The Language of Love (1957)
- The Languages of Pao (frontispiece) (1980)
- The Last Castle (frontispiece) (1966)
- The Last Castle [2] (1966)
- The Last Castle [3] (1966)
- The Last Castle [4] (1966)
- The Last Castle [5] (1966)
- The Last Days of the Captain (1962)
- The Last Days of the Captain [2] (1962)
- The Last Door (1968)
- The Last Hope of Earth (1965)
- The Last Hunt (1973)
- The Last Master of Limericks (1978)
- The Last Night of the Festival (1970)
- The Last Night of the Festival [2] (1970)
- The Last Place on Earth (1962)
- The Last Thrilling Wonder Story (1982)
- The Last Thrilling Wonder Story [2] (1982)
- The Light in the Looking Glass (1984)
- The Light in the Looking Glass [2] (1984)
- The Light That Never Was (frontispiece) (1973)
- The Lion Game (frontispiece) (1973)
- The Long Night (1974)
- The Lord of Death and the Queen of Life (1965)
- The Lord's Pink Ocean (frontispiece) (1973)
- The Lost Millennium (1967)
- The Mad Metropolis (1966)
- The Maker of Universes (1965)
- The Maker of Universes (frontispiece) (1965)
- The Maker of Universes (title page) (1965)
- The Mallinson Case (1970)
- The Malodorous Plutocrats (1979)
- The Man in the Maze (Part 1 of 2) (1968)
- The Man in the Maze (Part 2 of 2) (1968)
- The Man Who Knew How to Make History (1976)
- The Man Who Murdered Television (1976)
- The Man Who Saw Tomorrow (frontispiece) (1968)
- The Man Who Went Back (1985)
- The Man Who Would Not (1969)
- The Man Without a Planet (1966)
- The Many Worlds of Magnus Ridolph (frontispiece) (1966)
- The Many Worlds of Magnus Ridolph (frontispiece) (1980)
- The Martian Sphinx (1965)
- The Martian Star-Gazers (1962)
- The Martian Star-Gazers [2] (1962)
- The Martian Star-Gazers [3] (1962)
- The Martian Star-Gazers [4] (1962)
- The Martian Star-Gazers [5] (1962)
- The Mazel Tov Revolution (1974)
- The Meaning of the Word (1973)
- The Merchant of Stratford (1979)
- The Merchants of Venus (1972)
- The Mightiest Machine (1965)
- The Mildews of Mars (1977)
- The Mind Behind the Eye (frontispiece) (1972)
- The Mind Monsters (1966)
- The Mind Net (frontispiece) (1974)
- The Minus Effect (1969)
- The Mirror of Wizardry (1968)
- The Mirror of Wizardry [2] (1968)
- The Misfit (1965)
- The Missing Pink Elephant Case (1983)
- The Missionaries (frontispiece) (1972)
- The Misspelled Magician (Part 2 of 2) (1970)
- The Modern Penitentiary (1966)
- The Modern Penitentiary [2] (1966)
- The Moon Children (Part 1 of 3) (1971)
- The Moon Children (Part 1 of 3) [2] (1971)
- The Moon Children (Part 2 of 3) (1971)
- The Moon Children (Part 3 of 3) (1971)
- The Moon Moth (1965)
- The Moon of Gomrath (1968)
- The Napoleon Crime (1983)
- The Napoleon Crime [2] (1983)
- The Napoli Express (1979)
- The Napoli Express [2] (1979)
- The Napoli Express [3] (1979)
- The Napoli Express [4] (1979)
- The Noblest Experiment in the Galaxy (frontispiece) (1970)
- The Nuptial Flight of Warbirds (1978)
- The Off-Worlders (1966)
- The Old King's Answers (1973)
- The Old Switcheroo (1972)
- The Only War We've Got (1974)
- The Org's Egg (Part 2 of 3) (1974)
- The Org's Egg (Part 3 of 3) (1974)
- The Organleggers (1969)
- The Organleggers [2] (1969)
- The Organleggers [3] (1969)
- The Other Man (1956)
- The Other Man [2] (1956)
- The Other Man [3] (1956)
- The Overlords of War (frontispiece) (1974)
- The Palace of Love (frontispiece) (1979)
- The Panorama Egg (frontispiece) (1978)
- The Paradise Game (frontispiece) (1974)
- The Paradox of the Sets (frontispiece) (1979)
- The Perfect Cop (1976)
- The Persistence of Memory (1974)
- The Persistence of Vision (1980)
- The Persistence of Vision [2] (1980)
- The Phylogenetic Factor (1971)
- The Pictures of Pavanne (frontispiece) (1968)
- The Planet of the Double Sun (frontispiece) (1967)
- The Player at Yellow Silence (1970)
- The Player at Yellow Silence [2] (1970)
- The Pnume (frontispiece) (1979)
- The Politics of Plenty (1981)
- The Politics of Ratticide (1975)
- The Prism (1968)
- The Pritcher Mass (frontispiece) (1973)
- The Probability Man (frontispiece) (1972)
- The Propheteer (1970)
- The Proxima Project (1968)
- The Proxy Intelligence (condensed) (1968)
- The Psychotic InMate #2 (1968)
- The Purpose of Life (1967)
- The Purpose of Life [2] (1967)
- The Purpose of Life [3] (1967)
- The Queen of Zamba (1977)
- The Quest (1979)
- The Quest [2] (1979)
- The Quillan Sector (frontispiece) (1978)
- The R-Master (frontispiece) (1975)
- The Radio Planet (1964)
- The Rani and the Peacock Feather (1949)
- The Realms of Tartarus (frontispiece) (1977)
- The Rebel of Rhada (frontispiece) (1969)
- The Reflected Men (1971)
- The Region Between (1970)
- The Regulars (1981)
- The Repairmen of Cyclops (1965)
- The Return of the Cousins of the Dune Preacher's Mistress (1981)
- The Return of the King (1965)
- The Rithian Terror (1965)
- The Rival Rigelians (frontispiece) (1967)
- The Road to the Rim (1967)
- The Robots Are Here (1967)
- The Robots Are Here [2] (1967)
- The Rock and the Pool (1976)
- The Rock and the Pool [2] (1976)
- The Rub (1970)
- The S.B. Notations (1971)
- The Samaritan Rule (1984)
- The Sampler (1980)
- The Sapiphage (1976)
- The Schwarzkind Singularity (1975)
- The Screwfly Solution (1979)
- The Second Book of Fritz Leiber (frontispiece) (1975)
- The Second Law (1979)
- The Second War of the Worlds (frontispiece) (1976)
- The Secret of Holm Peel and Other Strange Stories (1970)
- The Secret of Hyperborea (1981)
- The Selchey Kids (1968)
- The Seven Domains of Darkover in the Fortieth Year of the Regency of Darvan Hastur (map) (1975)
- The SFWA Bulletin, December 1967 (1967)
- The SFWA Bulletin, February 1970 (1970)
- The SFWA Bulletin, July 1970 (1970)
- The SFWA Bulletin, June 1969 (1969)
- The SFWA Bulletin, October 1967 (1967)
- The SFWA Bulletin, September-November 1970 (1970)
- The Shaker Revival (1970)
- The Sharks of Pentreath (1971)
- The Ship from Atlantis (frontispiece) (1967)
- The Ship Sails at Midnight (1964)
- The Ship That Sailed the Time Stream (1965)
- The Sign of the Goose (1965)
- The Six Fingers of Time (1960)
- The Sixth Face (1975)
- The Sixth Face [2] (1975)
- The Sleeper with Still Hands (1968)
- The Smallness Beyond Thought (1966)
- The Sneeze (1981)
- The Snowbank Orbit (1964)
- The Soft Weapon (1967)
- The Sons of Bingaloo (1973)
- The Soul Machine (1969)
- The South Waterford Rumple Club (1967)
- The Spa of the Stars (1966)
- The Spot of Life (1964)
- The Stainless Steel Rat's Return (1972)
- The Star Below (1968)
- The Star Below [2] (1968)
- The Star Magicians (1966)
- The Star Mill (frontispiece) (1966)
- The Star Road (frontispiece) (1974)
- The Star Show (1979)
- The Star Show [2] (1979)
- The Star Show [3] (1979)
- The Star Show [4] (1979)
- The Star Show [5] (1979)
- The Star Show [6] (1979)
- The Star Show [7] (1979)
- The Star Virus (1970)
- The Star- Pit [2] (1967)
- The Star- Pit [3] (1967)
- The Star-Crowned Kings (frontispiece) (1975)
- The Star-Pit (1967)
- The Star-Sent Knaves (1963)
- The Star-Sent Knaves [2] (1963)
- The Stardroppers (frontispiece) (1972)
- The Stars My Destination (1970)
- The Stolen Sun (title page) (1967)
- The Stolen Sun and Tramontane (frontispiece) (1979)
- The Stone That Never Came Down (frontispiece) (1975)
- The Storms of Windhaven (1975)
- The Storms of Windhaven [2] (1975)
- The Story of the Future (1955)
- The Suicide Express (1966)
- The Suicide Express [2] (1966)
- The Survivors (frontispiece) (1979)
- The Survivors (frontispiece) (1979)
- The Switcher (1971)
- The Sword of Lankor (frontispiece) (1966)
- The Swords of Lankhmar (title page) (1968)
- The Tactful Saboteur (1964)
- The Tactful Saboteur [2] (1964)
- The Tactful Saboteur [3] (1964)
- The Taste of Money (1968)
- The Telzey Toy (frontispiece) (1973)
- The Tenth World (1966)
- The Terra Data (frontispiece) (1980)
- The Theft of the Mulberry Tree (1981)
- The Theft of the Mulberry Tree [2] (1981)
- The Thing in the Stone (1970)
- The Thing in the Stone [2] (1970)
- The Thing in the Stone [3] (1970)
- The Third Bubble (1965)
- The Tides of Time (1977)
- The Tides of Time [2] (1977)
- The Tie That Binds (1982)
- The Time Judge (1970)
- The Time Mercenaries (1968)
- The Tin Angel (frontispiece) (1973)
- The Tin Angel [1] (1973)
- The Tin Angel [2] (1973)
- The Tin Angel [3] (1973)
- The Tombs of Atuan (Complete Novel) (1970)
- The Tower of Glass (Part 1 of 3) (1970)
- The Tower of Glass (Part 1 of 3) [2] (1970)
- The Tower of Glass (Part 2 of 3) (1970)
- The Tower of Glass (Part 2 of 3) [2] (1970)
- The Tower of Glass (Part 2 of 3) [3] (1970)
- The Tower of Glass (Part 3 of 3) (1970)
- The Tower of Glass (Part 3 of 3) [2] (1970)
- The Tower of Glass (Part 3 of 3) [3] (1970)
- The Tower of Glass (Part 3 of 3) [4] (1970)
- The Tower of Glass (Part 3 of 3) [5] (1970)
- The Towns Must Roll (Part 1 of 2) (1969)
- The Towns Must Roll (Part 2 of 2) (1969)
- The Transcendent Tigers (1964)
- The Tree Lord of Imeten (1966)
- The Twilight of Briareus (frontispiece) (1975)
- The Twist (1974)
- The Two Towers (1965)
- The Ultimate Weapon (1966)
- The Uncommunicative Venusians (1967)
- The Uncommunicative Venusians [2] (1967)
- The Universe Against Her (1964)
- The Universe Maker (frontispiece) (1967)
- The Unsleeping Eye (frontispiece) (1974)
- The Unspeakable McInch (1966)
- The Unteleported Man (1966)
- The Villains From Vega IV (1968)
- The Villains From Vega IV [2] (1968)
- The Villains from Vega IV [3] (1968)
- The Wagered World (1969)
- The Wandering Variables (frontispiece) (1972)
- The War Machine (1972)
- The Warriors of Dawn (frontispiece) (1975)
- The Warriors of Light (1965)
- The Warriors of Light [2] (1965)
- The Watchers in the Glade (1964)
- The Watchers in the Glade [2] (1964)
- The Water of Thought (1965)
- The Way Back (frontispiece) (1978)
- The Weather on Mars (1974)
- The Well of the Worlds (1965)
- The Well-Trained Heroes (1964)
- The Well-Trained Heroes [2] (1964)
- The What March? (1982)
- The What March? [2] (1982)
- The Whenabouts of Burr (frontispiece) (1975)
- The White King's War (1969)
- The Wildings of Westron (map) (1977)
- The Wind from the Seven Suns (1981)
- The Winds of Gath (frontispiece) (1967)
- The Wizard of Anharitte (Part 1 of 3) (1972)
- The Wizard of Anharitte (Part 3 of 3) (1973)
- The World and Thorinn (1968)
- The World and Thorinn [2] (1968)
- The World and Thorinn [3] (1968)
- The World and Thorinn [4] (1968)
- The World Asunder (frontispiece) (1976)
- The World Between (1965)
- The World in Which I Disappeared (1968)
- The World Must Never Know (1965)
- The World That Couldn't Be (1958)
- The World That Couldn't Be [2] (1958)
- The World That Couldn't Be [3] (1958)
- The Worlds of Poul Anderson (frontispiece) (1978)
- The Worlds of Robert A. Heinlein (frontispiece) (1966)
- The Worlds of Theodore Sturgeon (frontispiece) (1972)
- The Wrecks of Time (1967)
- The Wrecks of Time (frontispiece) (1967)
- The Wrong End of Time (frontispiece) (1973)
- The X Factor (1965)
- The X Factor (title page) (1967)
- The Year of the Good Seed (1969)
- The Year's Best Fantasy Stories: 3 (frontispiece) (1977)
- The Year's Best Horror Stories: Series II (frontispiece) (1974)
- The Years (1972)
- The Youth Monopoly (1968)
- Then and Now (1977)
- Then and Now [2] (1977)
- These Savage Futurians (1967)
- They Still Jump (1967)
- This is My Country (1971)
- This One (1970)
- Thou Spark of Blood (1970)
- Three Against the Witch World (1965)
- Three Worlds of Futurity (1964)
- Time and Again (title page) (1963)
- Time and Duckworth (1974)
- Time of the Cetis (1973)
- Time of the Sending (1971)
- Time Story (frontispiece) (1973)
- Time to Live (1966)
- Timeserver (1970)
- Tinkerboy (1974)
- To Be or Knot To Be (1975)
- To Bell the Cat (1977)
- To Conquer Chaos (frontispiece) (1981)
- To Fill the Sea and Air (1979)
- To Fit the Crime (1971)
- To Jorslem (1969)
- To Jorslem [2] (1969)
- To Jorslem [3] (1969)
- To Keep the Ship (frontispiece) (1978)
- To Outlive Eternity (Part 1 of 2) (1967)
- To Outlive Eternity (Part 1 of 2) [2] (1967)
- To Outlive Eternity (Part 1 of 2) [3] (1967)
- To Outlive Eternity (Part 2 of 2) (1967)
- To Outlive Eternity (Part 2 of 2) [2] (1967)
- To Outlive Eternity (Part 2 of 2) [3] (1967)
- To Outlive Eternity (Part 2 of 2) [4] (1967)
- To Seek Another (1971)
- To Serve the Masters (1967)
- To Venus! To Venus! (frontispiece) (1970)
- Tomorrow Cum Laude (1969)
- Tomorrow Cum Laude [2] (1969)
- Tomorrow Cum Laude [3] (1969)
- Tomorrow Cum Laude [4] (1969)
- Tomorrow Knight (frontispiece) (1976)
- Tonight We Steal the Stars (1969)
- Too Many Esks (1966)
- Too Many Esks [2] (1966)
- Too Many Esks [3] (1966)
- Too Much at Steak (1978)
- Too Soon We Grow Old (1978)
- Total Eclipse (frontispiece) (1975)
- Total Environment (1968)
- Total Environment [2] (1968)
- Total Environment [3] (1968)
- Total Environment [4] (1968)
- Total Environment [5] (1968)
- Toward the Fullness of Fate (1976)
- Toward the Fullness of Fate [2] (1976)
- Toward the Fullness of Fate [3] (1976)
- Tower of the Medusa (frontispiece) (1969)
- Toyman (frontispiece) (1969)
- Trafic d'esclaves [French] (1957)
- Trafic d'esclaves [2] [French] (1957)
- Trafic d'esclaves [3] [French] (1957)
- Tramontane (title page) (1967)
- Transplant (1974)
- Traps (1970)
- Trees Like Torches (1966)
- Trees Like Torches [2] (1966)
- Trial by Fire (1969)
- Trick or Treaty (1965)
- Triggerman (1973)
- Triple Detente (frontispiece) (1974)
- Trouble with G.O.D. (1972)
- Truce or Consequences (1966)
- True Names (1981)
- True School of Modesty (1972)
- Truth to Tell (1974)
- Trêve au poing [French] (1973)
- Trêve au poing [2] [French] (1973)
- Tube (1974)
- Turning On (1967)
- Twenty-Seven Inches of Moonshine (1966)
- Twenty-Seven Inches of Moonshine [2] (1966)
- Twenty-Seven Inches of Moonshine [3] (1966)
- Twenty-Seven Inches of Moonshine [4] (1966)
- Twenty-Seven Inches of Moonshine [5] (1966)
- Two Suns for the King (1972)
- Ultimatum in 2050 A.D. (1965)
- Un cimetière sur toute la Terre [French] (1966)
- Un spectre hante le Texas (Part 1 of 4) [French] (1971)
- Un spectre hante le Texas (Part 2 of 4) [French] (1971)
- Un spectre hante le Texas (Part 3 of 4) [French] (1971)
- Un spectre hante le Texas (Part 4 of 4) [French] (1972)
- Un tour au paradis [French] (1958)
- Uncharted Stars (frontispiece) (1970)
- Under the Hammer (1974)
- Une chasse dangereuse [French] (1958)
- Une chasse dangereuse [2] [French] (1958)
- Une chasse dangereuse [3] [French] (1958)
- Unfaithful Recording (1975)
- Unicorn Variation (1981)
- Unicorn Variation [2] (1981)
- Unseen Warriors (1970)
- Unseen Warriors [2] (1970)
- Unseen Warriors [3] (1970)
- Uomini e draghi [Italian] (1963)
- Up-Top Summer (1979)
- Upon This Shoal of Time (1985)
- Uranus (1967)
- Utopia Minus X (1966)
- Valentina (1984)
- Valentina [2] (1984)
- Velvet Fields (1973)
- Victims of Time (1968)
- Victory on Janus (1968)
- View from a Height (1980)
- Volkhavaar (1977)
- Waiting for the Morning Bird (1981)
- Walker Between the Planes (1970)
- Walker Between the Planes [2] (1970)
- Wanderers and Travellers (1967)
- War of the Wastelife (1974)
- Warlock of the Witch World (1967)
- Warlord's World (frontispiece) (1975)
- Waterclap (1970)
- Waves (1974)
- Waves (frontispiece) (1980)
- We, the Venusians (1965)
- Web of the Witch World (1964)
- Web of the Witch World (map) (1964)
- Whalekiller Grey (1973)
- Whalekiller Grey [2] (1973)
- What Gave All Those Mammoths Cold Feet? (1983)
- What Strange Stars and Skies (1965)
- What You Know (1971)
- What's Become of Screwloose? And Other Inquiries (frontispiece) (1970)
- What's Wrong with this Picture? (1980)
- What's Wrong with this Picture? [2] (1980)
- What's Wrong with this Picture? [3] (1980)
- Whatever Became of the McGowans? (1970)
- When I Was In Your Mind (1972)
- When the Old Man Waves the Banner (1981)
- When the Sleeper Wakes (frontispiece) (1972)
- When the Star Kings Die (frontispiece) (1967)
- When They Openly Walk (1969)
- When We Come Down (1978)
- Where Are the Worlds of Yesteryear? (1967)
- Where Did Sindbad Sail? (1983)
- Where the Changed Ones Go (1966)
- Where the Changed Ones Go [2] (1966)
- Where the Changed Ones Go [3] (1966)
- Where the Changed Ones Go [4] (1966)
- Whipping Star (Part 1 of 4) (1970)
- Whipping Star (Part 1 of 4) [2] (1970)
- Whipping Star (Part 1 of 4) [3] (1970)
- Whipping Star (Part 1 of 4) [4] (1970)
- Whipping Star (Part 2 of 4) (1970)
- Whipping Star (Part 3 of 4) (1970)
- Whipping Star (Part 3 of 4) [2] (1970)
- Whipping Star (Part 3 of 4) [3] (1970)
- Whipping Star (Part 4 of 4) (1970)
- White Fang Goes Dingo (1965)
- Who Fired the Phoenix? (1981)
- Who Fired the Phoenix? [2] (1981)
- Who Is Human? (1966)
- Who Makes the Mandrakes? (1982)
- Who Makes the Mandrakes? [2] (1982)
- Whom the Gods Love (1972)
- Whores (1980)
- Whose Brother Is My Sister? (1967)
- Whose Brother Is My Sister? [2] (1967)
- Wildeblood's Empire (frontispiece) (1977)
- Wind Music (1976)
- Wind Music [2] (1976)
- Witch Children (1974)
- Witch World (map) (1963)
- Witch World (map) (1978)
- Witch World (map) (2001)
- Witch World (title page) (1963)
- Witchcraft for Beginners (1967)
- With Morning Comes Mistfall (1973)
- World Abounding (1973)
- World of Promise (frontispiece) (1980)
- World of Ptavvs (1965)
- World of Ptavvs [2] (1965)
- World of Ptavvs [3] (1965)
- World of Ptavvs [4] (1965)
- World of Ptavvs [5] (1965)
- World of Ptavvs [6] (1965)
- World of Ptavvs [7] (1965)
- World of Ptavvs [8] (1965)
- World of Ptavvs [9] (1965)
- World of the Sleeper (frontispiece) (1967)
- World Without Stars (1967)
- World's Best Science Fiction 1969 (1969)
- World's Best Science Fiction: 1965 (1965)
- World's Best Science Fiction: 1967 (1967)
- World's Best Science Fiction: 1968 (1968)
- World's Best Science Fiction: 1970 (1970)
- World's Best Science Fiction: 1971 (1970)
- Worlds for the Taking (1966)
- Worlds to Kill (1968)
- Wyst: Alastor 1716 (frontispiece) (1978)
- Ye Prentice and Ye Dragon (1975)
- Year 3 of the Shark (1973)
- Year of the Unicorn (1965)
- Year of the Unicorn (frontispiece) (1965)
- Year of the Unicorn (title page) (1965)
- You Can't Go Back (1981)
- You Go (1956)
- You're All Alone (frontispiece) (1972)
- Ysolde (1968)
- Yurth Burden (1978)
- Z-Sting (frontispiece) (1978)
- Zenya (frontispiece) (1974)
- Zon (1970)
- Zon [2] [French] (1971)
- Zon [3] [French] (1971)
- Zon [4] [French] (1971)
- Zon [5] [French] (1971)