| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Passport to Ski Areas of Colorado | 978-0-9768480-2-8 (0-9768480-2-3) | 2005 |
| Passport to the 13ers of Colorado | 978-0-9768480-1-1 (0-9768480-1-5) | 2005 |
| Passport to the 14ers of Colorado | 978-0-9768480-0-4 (0-9768480-0-7) | 2004 |