Sentinels from Space
Eric Frank Russell
The Sands of Mars
Arthur C. Clarke
Space Trilogy (3)
Iceworld
Hal Clement
The Puppet Masters
Robert A. Heinlein
Huon of the Horn
Andre Norton
The Warriors of Day
James Blish
Outpost Mars
C. M. Kornbluth & Judith Merril
The Starmen
Leigh Brackett
Killer By Night
Paul Valdez
Scientific Thriller Series (1)
The Moon Is Hell!
John W. Campbell, Jr.
Moon Ahead
Leslie Greener
Between Planets
Fear
L. Ron Hubbard
The Alien
Raymond F. Jones
The Lost Years
Oscar Lewis
Round the Bend
Nevil Shute
Empire
Clifford D. Simak
The City in the Sea
Wilson Tucker
The Disappearance
Philip Wylie
Prelude to Space
Galaxy Science Fiction Novel (3)