Lost Race of Mars
Robert Silverberg
Stadium Beyond the Stars
Milton Lesser
Trouble on Titan
Alan E. Nourse
Mystery of the Third Mine
Robert A. W. Lowndes
Secret of the Martian Moons
Donald A. Wollheim
The Secret of Saturn's Rings
The Secret of the Ninth Planet
Sons of the Ocean Deeps
Bryce Walton
Vandals of the Void
Jack Vance
Attack from Atlantis
Lester Del Rey
The Mysterious Planet
Marooned on Mars
Mists of Dawn
Chad Oliver
The Ant Men
Eric North
Danger: Dinosaurs!
Evan Hunter
Rocket to Luna
Battle on Mercury
The Star Seekers