Potomac Heritage National Scenic Trail, District of Columbia/Maryland/Pennsylvania/Virginia /
National Park Service, U.S. Department of the Interior.
- Unified English Braille transcription edition.
- 1 volume ; 29 cm
Comb binding. Cover title. Shipping list no.: 2016-0328-P. "POHE 2015: 388-437/30566 edition." "Visitor information brochure."