http://pec.lib.wvu.edu/record/P212411997Chesapeake and Ohio Canal official map and guide : Washington, D. C., Maryland, West Virginia.<p> Brochure. "GPO: 1997--417-648/40212 Reprint 1997."</p>United States. National Park Service.Canals--Maryland.Canals--Washington (D. C.)Chesapeake and Ohio Canal (Md. and Washington, D. C.)Canals--West Virginia.Chesapeake and Ohio Canal National Historical Park.14256