From What Far Star? (1950) (writing as Rolf Garner)
Return to Earth (1951)
And the Stars Remain (1952)
Dread Visitor (1952)
Aftermath (1952)
Born in Captivity (1952)
The Immortals (1953) (writing as Rolf Garner)
Resurgent Dust (1953) (writing as Rolf Garner)
The Venom Seekers (1953) (writing as Rolf Garner)
The Indestructible (1954) (writing as Rolf Garner)