| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 978-0-9717445-4-7 | Keystone The Standing Stone Trail Guide | ||
| 2009 | 978-0-9717445-5-4 | Wayne E. Gross | Appalachian Trail Guide to Pennsylvania |
| '' | 978-0-9717445-6-1 | Wayne Gross | Appalachian Trail Guide to Pennsylvania |