| 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 | Rhonda 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 Oregon | 978-0-7603-2921-4 | 2007 | |
| Our Washington | 978-0-7603-2920-7 | 2008 | Rhonda Ostertag |
G.O. · Georg Oesterdiekhoff · Georg Ostermaier · Georg Ostrogorsky · George & Rhonda Ostertag · George Ostrogorsky · Rhonda and George Ostertag
Globe Pequot · Motorbooks · Mountaineers Books