| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Grand Canyon - The Hidden Secrets | 6305212007 (6305212007) | 1999 | Kieth Merrill · Reed Smoot · Richard W. James · Stephen L. Johnson |
| Zion Canyon - Treasure of the Gods | 978-1-58448-168-3 (1-58448-168-4) | 2000 | Alan R. Andrus · Kieth Merrill · R. Brent Heaton · Reed Smoot · Scott Swofford |