1983 - Potomac Heritage NST
The Potomac Heritage NST snakes through five physiographic provinces among the lush and historic lanscapes of Virginia, Maryland, the District of Columbia and Pennsylvania. The Trail was originally proposed by President Lyndon Johnson in 1965, documented in "Trails for America" in 1966, and added to the National Trails System in 1983. Today, this Trail is a network of locally-managed trails, including the towpath of the Chesapeake and Ohio Canal National Historic Park, the Mount Vernon Trail, other trails in northern Virginia and Maryland, and the Great Allegheny Passage connecting Cumberland, Maryland to Pittsburgh, Pennsylvania. This trail network traces places and events at the heart of the Nation's evolution. Bridging two major watersheds, this Trail's segments guide visitors though a rich combination of natural areas, historic sites and vibrant cities and towns.
(Scherer, Glenn, 2002, " America's National Trails: Journeys Across Land and Time", Guilford, CT: Falcon Press, pp14 - 17, and the NPS website)