Stadium Beyond the Stars
Milton Lesser
Lost Race of Mars
Robert Silverberg
The Secret of the Ninth Planet
Donald A. Wollheim
The Year When Stardust Fell
Raymond F. Jones
The Lost Planet
Paul Dallas
Secret of the Martian Moons
The Ant Men
Eric North
Rockets to Nowhere
Lester Del Rey
The Secret of Saturn's Rings
Trouble on Titan
Alan E. Nourse
Danger: Dinosaurs!
Evan Hunter
Attack from Atlantis
The Mysterious Planet
Battle on Mercury
Missing Men of Saturn
R. S. Richardson
The Star Seekers
Mystery of the Third Mine
Robert A. W. Lowndes
Rocket to Luna