| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Doppelganger Effect: Gravity Tales From a Lost Generation | 978-0-692-29070-5 (0-692-29070-2) | 2010 | |
| Ray's: The Inspirational Story of the World's First Indoor Mountain Bike Park | 978-0-692-29514-4 (0-692-29514-3) | 2014 | Ray Petro |