E. G. ?? · E. Gross · W G · Wayne Gross
Appalachian Trail Conservancy · KEYSTONE TRAILS ASS.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Appalachian Trail Guide to Pennsylvania | 978-0-9717445-5-4 (0-9717445-5-6) | 2009 |
| Guide to the Appalachian Trail in Pennsylvania | 978-1-889386-03-4 (1-889386-03-0) | 1998 |