Keywords: Chesapeake and Ohio Canal National Historical Park (map).svg Chesapeake and Ohio Canal National Historical Park � along the former Chesapeake and Ohio Canal beside the Potomac River between Cumberland Maryland and Washington D C United States National Park Service website for Chesapeake and Ohio Canal National Historical Park http //www nps gov/choh/planyourvisit/parkmaps htm National Park Service US Department of the Interior 2008-10-09 Public domain - original work of the US Federal Government Chesapeake_and_Ohio_Canal_National_Historical_Park_ map jpg PD-USGov Chesapeake Ohio Canal National Historical Park 001 Potomac River 2004 Maps of protected areas of the United States Chesapeake National Capital Parks of the United States Chesapeake SVG maps |