Knight Rider (with Roger Hill)
1. Knight Rider (1983)
2. Trust Doesn't Rust (1984)
3. Hearts of Stone (1984)
4. The 24-carat Assassin (1984)
5. Mirror Image (1985)

The Hardy Boys and Nancy Drew Meet Dracula (1978) (with Michael Sloan)

Battlestar Galactica
1. Battlestar Galactica Classic: The Saga Of A Star World (1978) (with Robert Thurston)
2. Cylon Death Machine (1979) (with Robert Thurston)
3. The Tombs of Kobol (1979) (with Robert Thurston)
4. The Young Warriors (1980) (with Robert Thurston)
5. Galactica Discovers Earth (1980) (with Mike Resnick)
6. The Living Legend (1982) (with Nicholas V Yermakov (Simon Hawke))
7. War of the Gods (1982) (with Nicholas V Yermakov (Simon Hawke))
8. Greetings from Earth (1983) (with Ron Goulart)
9. Experiment in Terra (1983) (with Ron Goulart)
10. The Long Patrol (1984) (with Ron Goulart)
11. The Nightmare Machine (1985) (with Robert Thurston)
12. Die, Chameleon! (1986)
13. Apollo's War (1987) (with Robert Thurston)
14. Surrender the Galactica (1988) (with Robert Thurston)
The Battlestar Galactica Storybook (1979)