Destination Mars
Hugh Walters
Chris Godfrey of U.N.E.X.A. (6)
Sprockets: A Little Robot
Alexander Key
Sprockets (1)
Expedition Venus
Chris Godfrey of U.N.E.X.A. (5)
The Star Dwellers
James Blish
Heart Stars (1)
Arrow Book of Ghost Stories
Nora Kramer
The Weirdstone of Brisingamen
Alan Garner
Alderley (1)
Have Space Suit - Will Travel
Robert A. Heinlein
Have Space Suit (1)
Undersea City
Frederik Pohl & Jack Williamson
Jim Eden (3)
Lucky Starr and the Rings of Saturn
Isaac Asimov
Lucky Starr (6)
Tom Swift and His Deep-Sea Hydrodome
Jim Lawrence
Tom Swift, Jr. (11)
Citizen of the Galaxy
Lucky Starr and the Moons of Jupiter
Lucky Starr (5)
Time for the Stars
Undersea Fleet
Jim Eden (2)