Marooned on Mars
Lester Del Rey
The Mysterious Planet
Attack from Atlantis
Lost Race of Mars
Robert Silverberg
Vandals of the Void
Jack Vance
Sons of the Ocean Deeps
Bryce Walton
The Secret of Saturn's Rings
Donald A. Wollheim
Secret of the Martian Moons
The Secret of the Ninth Planet
Step to the Stars
Jim Stanley (1)
Mission to the Moon
Jim Stanley (2)
Son of the Stars
Raymond F. Jones
Ron Barron (1)
Planet of Light
Ron Barron (2)
The Star Conquerors
Ben Bova
Star Watch / Watchmen (1)