The Ascension Factor
Frank Herbert & Bill Ransom
Destination Void (4)
Cherish
Tana Stone
Barbarians of the Sand Planet (7)
The Riven Kingdom
Karen Miller
Godspeaker (2)
Ravens of Avalon
Marion Zimmer Bradley
Avalon (6)
Test of the Twins
Margaret Weis & Tracy Hickman
Legends (3)
War of the Twins
Legends (2)
Time of the Twins
Legends (1)