Martian Quest
Leigh Brackett
The Hard Way Up
A. Bertram Chandler
Imager's Challenge: Book Two of the Imager Portfolio
L. E. Modesitt, Jr.
Imager Portfolio (3)
On the Planet of Zombie Vampires
Harry Harrison & Jack C. Haldeman Ii
Bill, the Galactic Hero (5)
A Charge of Valor (Book #6 in the Sorcerer's Ring)
Morgan Rice
Sorcerer's Ring (6)