The Problem Professor
A. E. Van Vogt
The Rat and the Snake
Quest for the Future
Humans, Go Home!
Him
Moonbeast
Pendrake (1)
The Proxy Intelligence
The Ultra Man
Silkies in Space
The Silkie (1)
The Winged Man
A. E. Van Vogt & E. Mayne Hull
The Players of Null-A
Null-A (2)
Research Alpha
James H. Schmitz & A. E. Van Vogt