- Author: Jon DeCles Author Record # 11762
- Legal Name: Studebaker, Donald Valentine
- Birthdate: 5 December 1941
- Language: English
- Used These Alternate Names: Jon Des Cles, Mason Powell, Don Studebaker
- Additional Biographical Data: Bio:Jon DeCles
- Author Tags: fantasy (1)
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Novels
- The Brig (1984) [only as by Mason Powell]
- The Particolored Unicorn (1987)
- Blood of the Colyn Muir (1988) with Paul Edwin Zimmer
- Cantabile (1964)
- Forgive Us Our Debtors (1966)
- Sanitarium (1966)
- The Picture Window (1966)
- A Single Rose (1967)
- Cruelty (1970)
- The Thinker of Thryllmynrein (1975) [only as by Jon Des Cles]
- Rite of Kings (1978)
- Megacycles (1981)
- The Power of Kings (1988)
- The Incompetent Audience (1989)
- Consumption (1994) [only as by Mason Powell]
- Gonar's Saga (1995) [only as by Mason Powell]
- A Trick of the Light (1997) [only as by Mason Powell]
- At a Party in Pasadena (1997) [only as by Mason Powell]
- Mantik Rites (1998)
- Apprentice (2014)
- Parsley Sage, Rosemary and Wildthyme (2016)
- Haiku Portraits (1961) with David McDaniel and uncredited [only as by Ted Johnstone and Don Studebaker and uncredited]