Pythias
Frederik Pohl
The Far Shore of Time
Eschaton Sequence (3)
The World at the End of Time
Beyond the Blue Event Horizon
Heechee Saga (2)
The Siege of Eternity
Eschaton Sequence (2)
The Other End of Time
Eschaton Sequence (1)
Homegoing
Gateway Trip
Heechee Saga (5)
The Boy Who Would Live Forever
Heechee Saga (6)
Annals of the Heechee
Heechee Saga (4)
Heechee Rendezvous
Heechee Saga (3)
The Merchant's War
The Space Merchants (2)
Starburst
The Space Merchants
Frederik Pohl & C.M. Kornbluth
The Space Merchants (1)
Gateway
Heechee Saga (1)
The Starchild Trilogy
Frederik Pohl & Jack Williamson
Starchild (0.0)
Man Plus
Man Plus (1)
The Gold at the Starbow's End
The Age of the Pussyfoot