- Author: Gordon Williamson and Ron Volstad (illustrator)
- Language: English
- Year: 1989
- Author: David C. Isby Ron Volstad
- Language: English
- Year: 1990
- Author: Nigel Thomas Ron Volstad
- Language: English
- Year: 1987
- Author: David C. Isby Ron Volstad Ron Volstad
- Language: English
- Year: 1990
- Author: Robert C. Stern Don Greer Ron Volstad
- Language: English
- Year: 1996
- Author: Robert C. Stern Don Greer Ron Volstad
- Language: English
- Year: 1996