The Rival Rigelians and Planetary Agent X
Mack Reynolds
United Planets (1)
Beyond the Imperium
Keith Laumer
Imperium (2)
Riverworld
Philip José Farmer
Riverworld (1)
Gor Omnibus
John Norman
Gor (0)
Merlin's Godson
H. Warner Munn
Merlin's Godson (1)
Far Rainbow / The Second Invasion From Mars
Arkady Strugatsky & Boris Strugatsky
The Road to the Rim / The Hard Way Up
A. Bertram Chandler
The Saga of Commodore John Grimes (Ace Double Set) (1)
The History of the Runestaff
Michael Moorcock
The History of the Runestaff (36)
Three from the Legion
Jack Williamson
Legion of Space (1)
The Conan Chronicles
Robert E. Howard & L. Sprague de Camp & Lin Carter
Conan (1)