| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2004 | 978-0-9768480-0-4 | Hornsby Ashby | Passport to the 14ers of Colorado (Adventure Passports) |
| 2005 | 978-0-9768480-1-1 | '' | Passport to the 13ers of Colorado (Adventure Passports) |
| '' | 978-0-9768480-2-8 | '' | Passport to Ski Areas of Colorado |