Planetary Agent X
Mack Reynolds
United Planets (1)
Dawnman Planet
United Planets (2)
Romp
Police Patrol (1)
Amazon Planet
United Planets (5)
The Rival Rigelians
United Planets (3)
Computer War
Depression or Bust
Depression or Bust (1)
Mercenary from Tomorrow
Joe Mauser (1)
Code Duello
United Planets (4)
Earth Unaware
Criminal in Utopia