| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Waterfall Lover's Guide: Pacific Northwest: Where to Find Hundreds of Spectacular Waterfalls in Washington, Oregon, and Idaho | 978-O-89886-911-8 (O-89886-911-O) | 2005 |
A. P. · G. A. · G. P. · Gregory Alan Plumb · Gregory Plumb