The Ultra Man
A. E. Van Vogt
The Players of Null-A
Null-A (2)
More Than Superhuman
The Replicators
Fulfilment
The Twisted Men
Centaurus (1)
Itself!
Earth's Last Fortress
Him
Moonbeast
Pendrake (1)
The Proxy Intelligence
Silkies in Space
The Silkie (1)