The Winds of Darkover
Marion Zimmer Bradley
Darkover (17)
The Roosevelt Dispatches
Mike Resnick
Never Forsaken (The Kurtherian Gambit Book 5)
Michael Anderle
The Kurtherian Gambit (5)
The Tar-Aiym Krang
Alan Dean Foster
Pip and Flinx Adventure (2)
Imperium
Keith Laumer & Eric Flint