The Currents of Space
Isaac Asimov
Galactic Empire (3)
Reincarnations
Harry Turtledove & Sheila Williams
Fortress of Ice
C. J. Cherryh
Fortress (5)
Mystery of the Desert Giant
Franklin W. Dixon
Hardy Boys Original (40)
Out of the Silent Planet
C. S. Lewis
The Cosmic Trilogy (1)
Perelandra
The Cosmic Trilogy (2)