Zone Yellow
Keith Laumer
Imperium (4)
The Yillian Way
Retief (1)
Worlds of the Imperium
Imperium (1)
Worldmaster
The World Shuffler
Lafayette O'Leary (2)
The War Against the Yukks
The Walls
The Universe Twister
Lafayette O'Leary (1)
The Undefeated
The Ultimax Man
A Trip to the City
A Trace of Memory