The Appalachian Trail Conference, Inc.. Appalachian Trail Data Book 1989 In The Appalachian Trail Conference Publication. 11th ed. Harpers Ferry: The Appalachian Trail Conference, 1989.

The Appalachian Trail Conference, Inc.. Appalachian Trail Data Book                        1980 In The Appalachian Trail Conference                        Publication. 2d ed. Harpers Ferry, West Virginia: The Appalachian Trail                    Conference, 1980.