http://pec.lib.wvu.edu/record/P179901991Chesapeake and Ohio Canal : a guide to Chesapeake and Ohio Canal National Historical Park, Maryland, District of Columbia, and West Virginia.Monograph. "Official National Park handbook." "Handbook 142."United States. National Park Service. Division of Publications.Chesapeake and Ohio Canal (Md. and Washington, D. C.)--History.Chesapeake and Ohio Canal National Historical Park--Guidebooks.Canals--West Virginia--Guidebooks.Canals--Maryland--Guidebooks.Canals--Washington (D. C.)--Guidebooks.14256