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