Beyond the Visible
Brain Ultimate
Chaos in Miniature
The Last Mutation
Mice - or Machines
The Moon is Heaven
Once Upon a Space
World in a Test Tube (1951)
Moment Out of Time (1952) (writing as Roy Sheldon)
The Red Planet (1953)
Another Space, Another Time (1953)
Atoms in Action (1953) (writing as Roy Sheldon)
House of Entropy (1953) (writing as Roy Sheldon)
The Metal Eater (1954) (writing as Roy Sheldon)