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- Birthplace: Upper Darby, Philadelphia, Pennsylvania, USA
- Birthdate: 27 June 1949
- Webpage: http://www.allenk.com/main.html
- Used These Alternate Names: Al Koszowski , Allen J. Koszowski
- Interviews: A Conversation with Allen Koszowski , Allen Koszowski , Allen Koszowski: Ink in His Blood
- ISFDB Record Number: 15271
- Biography: Bio:Allen Koszowski
- Bibliographic Comments: Author:Allen Koszowski
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- Midnight Brushstrokes (1989)
- Travelers by Twilight (2000)
- Cover: Space and Time, March 1977 (1977)
- Cover: Space and Time, January 1980 (1980)
- Cover: Space and Time, April 1981 (1981)
- Cover: Space and Time, Summer 1983 (1983)
- Cover: Crypt of Cthulhu, #22 Roodmas 1984 (1984)
- Cover: Masques (1984)
- Cover: Science Fiction Review, Winter 1984 (1984)
- Cover: Crypt of Cthulhu, #26 Hallowmas 1984 (1984)
- Cover: Thrust, Winter 1985 (1985)
- Cover: Shudder Stories, #3 April 1985 (1985)
- Cover: Science Fiction Review, Summer 1985 (1985)
- Cover: Science Fiction Review, Fall 1985 (1985)
- Cover: Ship of Dreams (1986)
- Cover: Ghosts & Scholars #8 (1986)
- Cover: Fantasy Review, June 1986 (1986)
- Cover: Crypt of Cthulhu, #40 St. John's Eve 1986 (1986)
- Cover: The Complete Robert Bloch: An Illustrated Comprehensive Bibliography (1986)
- Cover: Crypt of Cthulhu, #42 Michaelmas 1986 (1986)
- Cover: Slow (1986)
- Cover: Science Fiction Review, Winter 1986 (1986)
- Cover: Crypt of Cthulhu, #43 Hallowmas 1986 (1986)
- Cover: Thrust, Summer 1987 (1987)
- Cover: Medusa (1987)
-
Cover: Crypt of Cthulhu, #50 Michaelmas 1987 (1987)
also appeared as:
- Variant Title: Crypt of Cthulhu #50 (cover) (1987)
- Cover: Skin Trades (1988)
- Cover: Skin Trades—Poetry (1988)
- Cover: Crypt of Cthulhu, #54 Eastertide 1988 (1988)
- Cover: Revelations from Yuggoth #2, May 1988 (1988)
- Cover: Crypt of Cthulhu, #62 Candlemas 1989 (1989)
- Cover: Crypt of Cthulhu, #63 Eastertide 1989 (1989)
- Cover: Crypt of Cthulhu, #66 Lammas 1989 (1989)
- Cover: Dreams & Nightmares, #29 1989 (1989)
- Cover: Pulphouse: The Hardback Magazine Issue 7: Spring 1990 (1990)
- Cover: Faces of the Beast (1990)
- Cover: Gauntlet #1 (1990)
- Cover: Cemetery Dance #3, Winter 1990 (1990)
- Cover: Churchyard #1, 1990 (1990)
- Cover: Churchyard #2, Summer 1990 (1990)
- Cover: Crypt of Cthulhu, #74 Lammas 1990 (1990)
- Cover: Eldritch Tales, Spring 1991 (1991)
- Cover: Weird Tales, Winter 1991/1992 (1991)
- Cover: Weirdbook, Autumn 1991 (1991)
- Cover: Ghosts & Scholars #13 (1991)
- Cover: Twisted #6, Summer/Fall 1991 (1991)
- Cover: New Pathways, January 1991 (1991)
- Cover: Crypt of Cthulhu, #79 Hallowmas 1991 (1991)
- Cover: Ghosts & Scholars #14 (1992)
- Cover: Chills # 6, Spring 1992 (1992)
- Cover: An Index to the Fiction & Poetry of H. P. Lovecraft (1992)
- Cover: Crossroads #1, March 1992 (1992)
- Cover: Eldritch Tales #27, Summer 1992 (1992)
- Cover: No. 472 Cheyne Walk: Carnacki: The Untold Stories (1992)
- Cover: Crossroads #3, September 1992 (1992)
-
Cover: The Scream Factory #10, Autumn 1992 (1992)
also appeared as:
- Variant Title: The Scream Factory #10 (cover) (1992)
- Cover: Crypt of Cthulhu, #82 Hallowmas 1992 (1992)
- Cover: Space & Time, Spring 1993 (1993)
- Cover: Two Obscure Tales (1993)
- Cover: Dead of Night #7, Spring/Summer 1993 (1993)
- Cover: Dead of Night #8, Fall/Winter 1993 (1993)
- Cover: Vampire Junkies (1994)
- Cover: Hyperprism / The Digital Wristwatch of Philip K. Dick (1994)
- Cover: The End #2, 1994 (1994)
- Cover: Dead of Night #9, Spring/Summer 1994 (1994)
- Cover: Encyclopedia Cthulhiana (1994)
- Cover: Eldritch Tales, Spring 1995 (1995) with Stephen Mark Rainey [only as by Allen Koszowski and Mark Rainey ]
- Cover: Crypt of Cthulhu, #89 Eastertide 1995 (1995)
- Cover: Fantastic Worlds v1 #1, 1996 (1996)
- Cover: Crossroads #14, February 1996 (1996)
- Cover: Cthulhu Codex #7, May 1996 (1996)
- Cover: Crossroads #15, June 1996 (1996)
- Cover: Tales of Lovecraftian Horror #4, Hallowmass 1996 (1996)
- Cover: Crossroads #17, February 1997 (1997)
- Cover: Outer Darkness #11, Spring 1997 (1997)
- Cover: Crossroads, June 1997 (1997)
- Cover: Outer Darkness #12, Summer 1997 (1997)
- Cover: Midnight Shambler # 6, Lammas 1997 (1997)
- Cover: Crossroads #19, October 1997 (1997)
- Cover: Outer Darkness #13, Autumn 1997 (1997)
- Cover: Tales of Lovecraftian Horror, #7 Hallowmas 1997 (1997)
- Cover: Mindmares #3, Summer 1998 (1998)
- Cover: Outer Darkness #14, Winter 1998 (1998)
- Cover: Crossroads #20, February 1998 (1998)
- Cover: Outer Darkness #15, Spring 1998 (1998)
- Cover: Tales of Lovecraftian Horror #8, Eastertide 1998 (1998)
- Cover: Outer Darkness #16, Summer 1998 (1998)
- Cover: Cthulhu Codex #14, Lammas 1998 (1998)
- Cover: Lovecraft's Mystery Magazine #2, 1998 (1998)
- Cover: Midnight Shambler # 9, Lammas 1998 (1998)
- Cover: Crypt of Cthulhu, #99 Lammas 1998 (1998)
- Cover: Outer Darkness #17, Autumn 1998 (1998)
- Cover: Crossroads #22 & 23, October 1998/February 1999 (1998)
- Cover: Sixty Years of Arkham House (1999)
- Cover: The Corpse Light and Other Tales of Terror (1999)
- Cover: My Own Private Spectres (1999)
- Cover: The House of The Nightmare: The Horror Fiction of Edward Lucas White (1999)
- Cover: Outer Darkness #18, Spring 1999 (1999)
- Cover: Outer Darkness #19, Summer 1999 (1999)
- Cover: Outer Darkness #20, Autumn 1999 (1999)
- Cover: Weird Crimes & Servants of Satan (1999)
- Cover: Cthulhu Codex, #16 Eastertide 1999 (1999)
- Cover: Midnight Shambler #11, Eastertide 1999 (1999)
- Cover: Burning Sky #3, 1999 (1999)
- Cover: Lovecraft's Mystery Magazine #3, 1999 (1999)
- Cover: New Mythos Legends (1999)
- Cover: The Ancient Track #2, October 1999 (1999)
- Cover: Burning Sky #4, 1999 (1999)
- Cover: Darkness Within #2, Autumn 1999 (1999)
- Cover: A Haunting Beauty (2000)
- Cover: Travelers by Twilight (2000)
- Cover: The Weird O' It (2000)
- Cover: Darkness Within #3, Winter 2000 (2000)
- Cover: The Monster Maker and Other Stories (2000)
- Cover: Space and Time, #91, Spring 2000 (2000)
- Cover: Star*Line, July-August 2000 (2000)
- Cover: Burning Sky #6, 2000 (2000)
- Cover: Star*Line, September-October 2000 (2000)
- Cover: Point of View (2000)
- Cover: The Beasts of Brahm (2001)
- Cover: The Return of the Soul and Other Stories (2001)
- Cover: Sesta and Other Strange Stories: The Horror Fiction of Edward Lucas White (2001)
- Cover: The Scarecrow and Other Stories (2001)
- Cover: Outer Darkness #22, Spring 2001 (2001)
- Cover: Star*Line, March-April 2001 (2001)
- Cover: Burning Sky #8, 2001 (2001)
- Cover: Lovecraft's Weird Mysteries #4, 2001 (2001)
- Cover: Star*Line, May-June 2001 (2001)
- Cover: Outer Darkness #23, Summer 2001 (2001)
- Cover: The Shadow on the Blind and Other Ghost Stories (2001)
- Cover: Burning Sky #9, 2001 (2001)
- Cover: Star*Line, July-August 2001 (2001)
- Cover: Black Satellite #1, Fall 2001 (2001)
- Cover: Star*Line, November-December 2001 (2001)
- Cover: The Harlem Horror (2002)
- Cover: The Garden at 19 (2002)
- Cover: Day Dark, Night Bright (2002)
- Cover: Feesters in the Lake & Other Stories (2002)
- Cover: Star*Line, January-February 2002 (2002)
- Cover: Dreams & Nightmares, #63, 2002 (2002)
- Cover: Prelude to Armageddon (2003)
- Cover: Cemetery Dance #46, 2003 (2003)
- Cover: No Place Like Earth (2003)
- Cover: Wicked Hollow #6, April 2003 (2003)
- Cover: Eternity Lost: The Stories of Clifford D. Simak Volume One (2004)
- Cover: The Innsmouth Tabernacle Choir Hymnal (2004)
- Cover: Horrible Imaginings (2004)
- Cover: Tales of the Uneasy (2004)
- Cover: The Shining Hand & Other Tales of Terror (2004)
- Cover: Brian Lumley's Freaks (2004)
- Cover: Thing of Darkness (2005)
- Cover: My Rose & My Glove: Stories (Real and Surreal) (2005)
- Cover: Star Changes (2005)
- Cover: Maelstrom (2005)
- Cover: Dreams & Nightmares, #70, 2005 (2005)
- Cover: The Arkham Alphabet Book: Being a Compilation of Life's Lessons in Rhyme for Squamous Spawn (2006)
- Cover: The Colour Out of Darkness (2006)
- Cover: Dreams & Nightmares, #74, 2006 (2006)
- Cover: Darker Tides: The Weird Tales of Eric Frank Russell (2006)
- Cover: Physician to the Universe (2006)
- Cover: Blood Coven (2007)
- Cover: Cemetery Dance, # 57, March 2007 (2007)
- Cover: Bound for Evil: Curious Tales of Books Gone Bad (2008)
- Cover: The King of Deadtown (2008)
- Cover: Dark Discoveries #12, Fall 2008 (2008)
- Cover: Inhuman #4, Summer 2009 (2009)
- Cover: The Mysterious Flame (2009)
- Cover: Allen K's Inhuman Magazine #5, Fall 2011 (2011)
- Cover: The Undying Thing and Others (2011)
- Cover: Satans of Saturn (2012)
- Dreams and Damnations (1976)
- The Diversifier #15 (1976)
- Editorial (The Diversifier #17) (1976)
- Late News on Market Up-Date (Caveat) (1976)
- The Thing That Collected Bloch (1977)
- The Diversifier #25 (1978)
- Weirdbook 13 (1978)
- Revenge (1979)
- William Pugmire, 1741-1800, R.I.P. (1979)
- The Different Man: Dickson's Donal Graeme (1979)
- Book Reviews (The Diversifier #28-29) (1979)
- Amateur Night (1979)
- Paragon #1 (1980)
- Paragon #1 (H. P. Lovecraft) (1980)
- Caveat (Paragon #1) (1980)
- Paragon #1 (1980)
- Fantasy Tales V4n8 (1981)
- Ghoul's View (1982)
- The Hell of Black Lines (1982)
- Untitled (1982)
- Fantasy Tales V5n9 (1982)
- October Treat (1982)
- Fantasy Tales V5n10 (1982)
- A Night on the Docks (1982)
- To Welcome One of Their Own (1982)
- Fantasy Tales V6n11 (1982)
- Keeping Christmas (1983)
- The Entity from Before Creation (1983)
- Holy Fire [3] (1983)
- Midnight Graffiti [6] (1983)
- Midnight Graffiti [10] (1983)
- The Legend of Santa Claus (1983)
- Ray Bradbury: Literature as Lark (1983)
- Suckers! (1983)
- Cthulhu (1983)
- Our Lany of the Shadows (1983)
- The Stones Would Weep (1983)
- Richard Matheson: He Is Legend: An Illustrated Bio-Bibliography (1984)
- Gramma (1984)
- Gramma [2] (1984)
- With a Bat (1984)
- The Call (1984)
- The Arkham Sampler VIIn1 (1984)
- The Arkham Sampler VIIn1 [2] (1984)
- Crypt of Cthulhu #25 (1984)
- Awoken! (1984)
- Dragon (1984)
- The Eyes Have It (1984)
- Innsmouth Pier (1984)
- Scarecrow (1984)
- Cthulhu (1984)
- Headache (1984)
- untitled (1984) [only as by Al Koszowski ]
- The Right Thing (1984) [only as by Al Koszowski ]
- The Last Guest (1984)
- Shudder Stories #2 (1984)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [4] (1985)
- Run Through (1985)
- Praxis (1985)
- Crypt of Cthulhu #32 (1985)
- Yuggoth (1985)
- The Other Side (1985)
- The Magus (1985)
- Handy (1985)
- Stomach-ache (1985)
- Bug (1985)
- Night Gaunt (1985)
- Weirdbook 21, Autumn 1985 (back cover) (1985)
- HPL (1985)
- Nightmare (1985)
- Boneyard (1985)
- Lake Dweller (1985)
- Dissolution (1985)
- The Ancestour (1985)
- The Demon (1985)
- Nightmare Abyss (1985)
- Nightwing (1985)
- Visitor (1985)
- The Outsider (1985)
- Warped (1985)
- Manfish (1985)
- Fantasy Tales V8n15 (1985)
- After Nightfall (1985)
- The Swamp (1986)
- Ship of Dreams (1986)
- Rails of the Yellow Skull (1986)
- Dagon Manor (1986)
- Satan Walks at Midnight (1986)
- On Voodoo (1986)
- Crypt of Cthulhu #38 (1986)
- Bubbles (1986)
- Surprise (1986)
- Crystal Creature (1986)
- Charge (1986)
- Death Warrior (1986)
- Slow (1986)
- Fantasy Tales V8n16 (1986)
- Red (1986)
- Genie (1986)
- Greetings (1986)
- Bride of the Tree Man (1986)
- Spirit Fangs (1986)
- Doomed Maidens for Satan's Brothel (1986)
- Midnight Graffiti [7] (1987)
- Midnight Graffiti [4] (1987)
- The Horror Show, Fall 1987 (1987)
- Lore #8, Autumn 1997 [2] (1987)
- Medusa (1987)
- Manuscript for the Damned (1987)
- Blind Date from Hell (1987)
- Captive of the Corpse-Defilers (1987)
- When Jaquerel Walked with Shadows (1987)
- Weirdbook 22, Summer 1987 (back cover) (1987)
- The Ghoul of the Four Winds (1987)
- Silent Night, Unholy Night (1987)
- Grim Reaper (1987)
- Caught! (1987)
- Medusa (1987)
- At the Mountains of Madness (1987)
- Slim Pickings (1987)
- Etchings & Osysseys #10 (1987)
- The Dunwich Horror (1987)
- untitled (1987)
- untitled (1987)
- Plaything for the Chortling Fiend (1987)
- Coffin Crag (1987)
- From the Secret Chamber (1987)
- The View from Yuggoth (1987)
- Revelations from Yuggoth #1 (1987)
- Kraken (1987)
- Y'ha-Nthlei (1987)
- Revelations from Yuggoth #1 [2] (1987)
- Wilbur Whateley Waiting (1987) with Jim Pianfetti
- A Cold Collation (1987)
- Spores from Yuggoth (1987)
- The Gallery of Richard Upton Pickman (1988)
- Fancy That (1988)
- Dagon's Bell [7] (1988)
- Black Mass (1988)
- Too Much Night (1988)
- Godfall (1988)
- Midnight Graffiti [2] (1988)
- Midnight Graffiti [8] (1988)
- Midnight Graffiti [9] (1988)
- To Kill a Wizart! (1988)
- The Ring of AA (1988)
- Skin Trades—Poetry (1988)
- Dragon People (1988)
- Night Parade: Dichotomies [2] (1988)
- From the Out Box: In Which We Explore Our Limits [2] (1988)
- Night Parade: The Man With the Crooked Fingers (1988)
- Revelations from Yuggoth #2 (1988)
- The View from Yuggoth (1988)
- The View from Yuggoth [2] (1988)
- Revelations from Yuggoth #2 [3] (1988)
- Revelations from Yuggoth #2 [4] (1988)
- Revelations from Yuggoth #2 [5] (1988)
- Revelations from Yuggoth #2 [6] (1988)
- Necrofile (1988)
- Blood over the Footlights (1988)
- The Dance of Satan's Corpses (1988)
- Horror on the Road: Bucks County Ghosts (1988)
- Horrorock!: The Demon Soul of Rock and Roll (1988)
- The Best Horror from Fantasy Tales (frontispiece) [3] (1988)
- Red (1988)
- Rogue's Galley (Midnight Graffiti #3) (1989)
- Through Channels (1989)
- Grue No. 9 [1] (1989)
- conGRUEities (Grue No. 9) [2] (1989)
- Back Cover (Grue No. 9) (1989)
- Necrofile (1989)
- The Embracing (1989)
- Fears (1990)
- Untitled (Lore #4, Spring 1996) (1990)
- Lightspeed Claustrophobia (1990)
- Blood (1990)
- The Dump (1990)
- Triptych [2] (1990)
- My Brother, the Sex Fiend (1990)
- Crypt of Cthulhu #73 (1990)
- Crypt of Cthulhu #74 (1990)
- Pickman's Gallery (Crypt of Cthulhu #74) (1990)
- Pickman's Gallery [2] (Crypt of Cthulhu #74) (1990)
- Time Enough for Lunacy (1990)
- Haggardly Beth and the Black Hour (1990)
- New Recruits (1990)
- The Classic Horrors: The Messenger (1991) with Jason Van Hollander
- The Classic Horrors: It (1991)
- The Classic Horrors: Cthulhu (1991)
- Unnamed (1991)
- untitled (Lovecraft's Weird Mysteries #8) [6] (1991)
- Back Cover (Grue No. 12) (1991)
- Nightcrawlers (1991)
- Astral Meanderings (1991)
- Weirdbook 26, Autumn 1991 (back cover) (1991)
- The Classic Horrors: Black Destroyer (1992)
- Demons and Deviants (1992) with John Bolton and Clive Barker and Jim Whiting
- Science Fiction Review, January 1992 (1992)
- SF and the Overselling of Space [2] (1992)
- The Stealer of Dreams (1992)
- The Classic Horrors: Mother of Toads (1993)
- Two Obscure Tales (1993)
- Crypt of Cthulhu #83 (1993)
- The Night It Came [2] (1993)
- The Wine Shop (1993)
- The Classic Horrors: The Shadow Over Innsmouth (1994)
- A Martian Odyssey (1994)
- The Classic Horrors: Stragella (1994)
- At Diamond Lake (1994)
- The Forever Trees (1995)
- The Classic Horrors: The Monkey's Paw (1995)
- Lore #7, Summer 1997 [2] (1995)
- Made in Goatswood (frontispiece) (1995)
- Crypt of Cthulhu #90 (1995)
- The Day Nothing Happened (1995)
- The Dunwich Cycle: Where the Old Gods Wait (frontispiece) (1995)
- The Classic Horrors: Smoke Ghost (1996)
- The Chair (1996)
- The Classic Horrors: The Graveyard Rats (1996)
- When the Lamp Is Shattered (1996)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [3] (1996)
- Crypt of Cthulhu #92 (1996)
- In The Whisper Of Still Voices (1997)
- Things Left Behind (1997)
- Editorial (Whispers 1997) (1997)
- The Silence of Kings (1) (1997)
- The Silence of Kings (2) (1997)
- Bare Bones, Bare Bones (1997)
- Siren (1997)
- Adrian (1997)
- A Gift of Magic (1997)
- Lore #8, Autumn 1997 (1997)
- untitled (Lovecraft's Weird Mysteries #7) [3] (1997)
- untitled (Lovecraft's Weird Mysteries #8) [5] (1997)
- untitled (Lovecraft's Weird Mysteries #8) [11] (1997)
- Lore #9, 1998 (1997)
- Lore #9, 1998 [2] (1997)
- Lore #7, Summer 1997 (1997)
- On the Last Day of School (1997)
- Queen of the Black Coast (1997)
- Valley of the Worm: Origins and Interpretations (1997)
- The Fantastic Worlds of Robert E. Howard [2] (1997)
- The Fantastic Worlds of Robert E. Howard [3] (1997)
- Singers of Strange Songs: A Celebration of Brian Lumley (1997)
- The Game (1998)
- The Classic Horrors: Who Goes There? (1998)
- Beddy-Bye (1998)
- Ring Ring! (1998)
- Gills (1998)
- Gills [2] (1998)
- Lovecraftian Lore: Dagon (1998)
- untitled (Lovecraft's Weird Mysteries #7) (1998)
- Sixty Years of Arkham House (1999)
- The Classic Horrors: The Dweller in the Gulf (1999)
- The Classic Horrors: The Dunwich Horror (1999)
- The Last Continent: New Tales of Zothique (1999) with Fredrik King
- The House Of The Nightmare (1999)
- Grand Guignol (1999)
- Grand Guignol [2] (1999)
- Inside the Earth, Under the Sea (1999)
- Kill Me Hideously (1999)
- The Family Football (1999)
- The Family Football [2] (1999)
- A Dunwich School Primer (1999)
- The Dead of Winter (1999)
- Lovecraftian Lore: The Colour Out of Space (1999)
- untitled (Lovecraft's Weird Mysteries #7) [2] (1999)
- untitled (Lovecraft's Weird Mysteries #8) [4] (1999)
- Mindmares #5, Winter 1999 (1999)
- The Classic Horrors: The Rats in the Walls (2000)
- Callum's Feast (2000)
- The Jest of Yig (2000)
- The Classic Horrors: The Ash Tree (2000)
- Haunted Shadows (2000)
- untitled (Lovecraft's Weird Mysteries #8) [8] (2000)
- untitled (Lovecraft's Weird Mysteries #8) [9] (2000)
- An Antique Vintage (2000)
- Crypt of Cthulhu #106 (2000)
- Crypt of Cthulhu #106 [2] (2000)
- Crypt of Cthulhu #106 [3] (2000)
- Graveyard (2001)
- The Classic Horrors: Caterpillars (2001)
- The Gravedigger's Apprentice (2001)
- The Classic Horrors: Haggopian (2001)
- Winter Warfareland (2001)
- The Classic Horrors: A Place Called Dagon (2001)
- Fingers of Fear (2001)
- untitled (Lovecraft's Weird Mysteries #8) [2] (2001)
- Lachesis (2001)
- Burden of Guilt 3: Growing Pains (2001)
- Crypt of Cthulhu #107 (2001)
- Portrait of Fritz Leiber (frontispiece) (2001)
- The Taint of Lovecraft (2002)
- Cthulhu Fhtagn, Baby! (2002)
- The Quilter (2002)
- The Word (2002)
- The Classic Horrors: Queen of the Black Coast (2002)
- The Disciple (2002)
- The Classic Horrors: The Fog Horn (2002)
- Echo of a Curse (2002)
- Road Trip (2002)
- Millennium Ball (2002)
- The Classic Horrors: Ooze (2003)
- Jack Williamson (2003)
- Architectures of Night (2003)
- Back Home (2003)
- 768-2003 (2003)
- The Eyrie (Weird Tales, July-August 2003) (2003)
- The Five Sisters: A Fable (2003)
- Two Shows Daily (2003)
- Manila Peril (2003)
- The Classic Horrors: The Skull of the Marquis de Sade (2003)
- Ye Olde Video Shoppe (2003)
- The Innsmouth Tabernacle Choir Hymnal (2004)
- Lambert, Lambert (2004)
- untitled (Lovecraft's Weird Mysteries #8) [1] (2004)
- The Devil's Vein (2004)
- Bringing Helena Back (2004)
- Consolation (2004)
- Brian Lumley's Freaks (2004)
- I Met Murder on the Way (2004)
- A Better Place (2004)
- Weird Trails (2004)
- Around the Bend in the Trail . . . (2004)
- The One That Got Away (2004)
- The Rider of the Dark (2004)
- The Rider of the Dark [2] (2004)
- The Rider of the Dark [3] (2004)
- Spud Wrangler (2004)
- Spud Wrangler [2] (2004)
- The Classic Horrors: The Upper Berth (2004)
- The Ghost of Me (2004)
- The Ghost of Me [2] (2004)
- The Ghost of Me [3] (2004)
- The Ghost of Me [4] (2004)
- Shore of Night, Shore of Day (2004)
- Shore of Night, Shore of Day [2] (2004)
- Shore of Night, Shore of Day [3] (2004)
- The Gods of Green and Gray (2005)
- Ghost Town (2005)
- The Face by the River (2005)
- The Face by the River [2] (2005)
- The Arkham Alphabet Book (2006)
- My Sister's House (2006)
- My Sister's House [2] (2006)
- My Sister's House [3] (2006)
- My Sister's House [4] (2006)
- My Sister's House [5] (2006)
- My Sister's House [6] (2006)
- My Sister's House [7] (2006)
- The Classic Horrors: Down There (2006)
- Arthur's Lion (2006)
- Arthur's Lion [2] (2006)
- Arthur's Lion [3] (2006)
- Arthur's Lion [4] (2006)
- Arthur's Lion [5] (2006)
- The Persecution of Artifice the Quill (2006)
- The Persecution of Artifice the Quill [2] (2006)
- The Persecution of Artifice the Quill [3] (2006)
- The Persecution of Artifice the Quill [4] (2006)
- The Persecution of Artifice the Quill [5] (2006)
- The Persecution of Artifice the Quill [6] (2006)
- The Persecution of Artifice the Quill [7] (2006)
- Eric Frank Russell (2006)
- Clark Ashton Smith Dies at 68 (2006)
- Sword & Fantasy #7 (2006)
- Dark Forces (2007)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [9] (2007)
- Every Time I Close My Eyes (2007)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [8] (2008)
- Inhuman #4, Summer 2009 (2009)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [7] (2009)
- Prowl (2009)
- From the Brain Stem (2010)
- Swift Decline (2010)
- The Dungeon Out of Time (2010)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) (2011)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [2] (2011)
- San Diablo (2011)
- SoulEater (2011)
- Homebody (2011)
- Bernice (2011)
- Mythos Art Gallery (2011)
- Yog-Sothoth (2011)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [5] (2011)
- Love In a Time of Zombies (2011)
- Scarecrows In The Nebraska Moonlight (2011)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [6] (2011)
- Pick and Grim (2011)
- An Outsider (2011)
- The Carousel (2011)
- untitled (Allen K's Inhuman Magazine #5, Fall 2011) [10] (2011)
- Allen Koszowski: Ink in His Blood (2011)
- untitled (Lovecraft's Weird Mysteries #8) [3] (unknown)
- untitled (Lovecraft's Weird Mysteries #8) [7] (unknown)
- untitled (Lovecraft's Weird Mysteries #8) [10] (unknown)
- Bloom Where You're Planted (unknown)
- Midnight Graffiti [5] (1983)
- House of Death (1990)
- Nightprowlers (1991)
- Letter (Science Fiction Review #32) (1979)
- Letter (Fantasy Tales V5n9) (1982)
- Letter (Science Fiction Review #45) (1982)
- Letter (Crypt of Cthulhu #26) (1984)
- H. P. Lovecraft: Re-Animator (film review) (1985)
- Letter (Crypt of Cthulhu #40) (1986)
- Letter (Crypt of Cthulhu #52) (1987)
- Letter (Crypt of Cthulhu #53) (1988)
- Letter (Crypt of Cthulhu #57) (1988)
- Letter (Crypt of Cthulhu #71) (1990)
- Letter (Crypt of Cthulhu #75) (1990)
- Art and Artist's Profile of Allen Koszowski (1991)
- An Allen K Bestiary (2004)
- From the Vault (Inhuman #4, Summer 2009) (2009)
- From the Vault: Editorial by Allen K (Allen K's Inhuman Magazine #5, Fall 2011) (2011)
- The Dark Descent (2005) by David G. Hartwell