The Ringworld engineers
Larry Niven
Ringworld (2)
This Lullaby
Sarah Dessen
Stork Naked
Piers Anthony
Xanth (30)
Sister of the Dead
Barb Hendee & J. C. Hendee
Saga of the Noble Dead (3)
The Search for Truth (Erec Rex)
Kaza Kingsley
Eric Rex (3)
The Three Furies (Erec Rex)
Eric Rex (4)