The Astronaut
Valentina Zhuravlyova
The Ring
Piers Anthony & Robert E. Margroff
The Right Time
John Berryman
Impact
Irving E. Cox, Jr.
Cosmic Checkmate
Katherine MacLean & Charles V. De Vet
Kalin Trobt (1)
The Maker of Universes
Philip José Farmer
The World of Tiers (1)
The Gates of Creation
The World of Tiers (2)
A Private Cosmos
The World of Tiers (3)
A Feast Unknown
Secrets of the Nine (1)
Night of Light
Father Carmody (1)
A Bowl Bigger Than Earth