George & Rhonda Ostertag · Randy Ostrow · Renate Osterloh · Rhonda and George Ostertag
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| 75 Hikes in the Oregon's Coast Range and Siskiyous | 978-0-89886-620-9 | 2001 | George Ostertag |
| Best Short Hikes in Northwest Oregon | 978-0-89886-880-7 | 2003 | " |
| California State Parks: A Complete Recreation Guide | 978-0-89886-762-6 | 2001 | " |
| Hiking New York, 2nd | 978-0-7627-2242-6 | 2002 | " |
| Hiking New York, 3rd: A Guide to the State's Best Hiking Adventures | 978-0-7627-4460-2 | 2009 | " |
| Hiking Pennsylvania, 2nd | 978-0-7627-2244-0 | 2002 | " |
| Our Washington | 978-0-7603-2920-7 | 2008 | " |
Globe Pequot · Motorbooks · Mountaineers Books