- (1967) Novel: "The Mole Pirate"
- (1962) Novel: "Operation Terror"
- (1959) Novel: "The Monster from Earth's End". NOTE: Filmed as The Navy vs. the Night Monsters (1966).
- (1960) Novel: "The Wailing Asteroid". NOTE: Filmed as The Terrornauts (1967).
- (1920) Story (as Will F. Jenkins): "The Purple Hieroglyph". NOTE: Filmed as Torchy Blane in Chinatown (1939), Murder Will Out (1930), The Purple Cipher (1920).
- Story: "The Owner of the Axtec". NOTE: Filmed as Good as Gold (1927).
- (1945) Short story: "First Contact". NOTE: Filmed as Primo contatto (1979)).
- (1935) Novelette: "The Barrier".
- Novel: "The Pirates of Zan".
- Novel: "The Invaders".
- Novel: "Creatures of the Abyss".
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