The K-Factor
Harry Harrison
The Longest Voyage
Poul Anderson
A Question of Courage
J. F. Bone
Medal of Honor
Mack Reynolds
Romance in a Twenty-First Century Used-Car Lot
Robert F. Young
Oomphel in the Sky
H. Beam Piper
Federation (1)
Combat
The Apprentice
James White
To Choke an Ocean
Alarm Clock
Everett B. Cole
By Proxy
Randall Garrett
The Six Fingers of Time
R. A. Lafferty