- Author: Robert W. Krepps Author Record # 1862
- Legal Name: Krepps, Robert Wilson
- Birthplace: Pittsburgh, Pennsylvania, USA
- Birthdate: 11 December 1919
- Deathdate: 24 January 1980
- Language: English
- Webpages: SFE, southafricabooks.com, Wikipedia-DE
- Used These Alternate Names: Robert Krepps, Robert W. Kreps, Geoff St. Reynard, Geoffrey St. Reynard
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Novels
- Mistress of the Djinn (1950)
- Black Man's Burden / The Giants from Outer Space (2014) [O] with Mack Reynolds
- Armageddon, 1970 (2021)
- Beware, the Usurpers! (2021)
- Beyond the Fearful Forest (2021)
- Chaos über Manhattan [German] (1968)
- Die Welt in Ketten [German] (1958)
- Don't Panic! (2021)
- The Buttoned Sky (2010)
- The Enchanted Crusade (2021)
- The Enormous Room (2010) with H. L. Gold
- The Giants from Outer Space (2010)
- Tomorrow the World! (2021)
- Vengeance from the Past! (2021)
- "A Nickel Saved ..." (1949)
- Androcles and the Buccaneer (1947)
- Armageddon, 1970 (1952)
- Beware, the Usurpers! (1951)
- Beyond the Fearful Forest (1951)
- Blue Bottle Fly (1949)
- By Yon Bonnie Banks (1945)
- Don't Panic! (1954)
- Elementals of Jedar (1950)
- Five Years in the Marmalade (1949)
- Make Yourself a Wish (1948)
- Mr. Beller and the Winged Horse (1947)
- Not an Accident (1995)
- The Buttoned Sky (1953)
- The Cosmic Bunglers (1956)
- The Enchanted Crusade (1953)
- The Enormous Room (1953) with H. L. Gold
- The Giants from Outer Space (1954)
- The Plaid Pterodactyl (1949)
- The Radiant Menace (1951)
- The Sword of Ra (1951)
- The Usurpers (1950)
- The Warder and the Wampum (1947)
- Through a Dead Man's Eyes (1945)
- Tomorrow the World! (1952)
- Vengeance from the Past! (1954)
- Wink Van Ripple (1945)
- Wrestlers Are Revolting! (1952)