The Pursuit of the Pankera: A Parallel Novel About Parallel ...
Robert A. Heinlein
Lord Valentine's Castle: Book One of the Majipoor Cycle
Robert Silverberg
Majipoor (1)
The Skull Throne: Book Four of the Demon Cycle
Peter V. Brett
The Demon Cycle (4)
Time Patrolman
Poul Anderson
Time Patrol (2)
A Short Stay in Hell
Steven L. Peck