Potomac Railroad was created in 1867.
Potomac Riverkeeper was created in 2000.
Potomac Mills was created in 1985.
Army of the Potomac was created in 1861.
Potomac College was created in 1991.
Potomac Nationals was created in 1978.
Potomac Mavericks was created in 2007.
Maidstone-on-the-Potomac was created in 1741.
Potomac Curling Club was created in 1961.
Potomac - PAT station - was created in 1987.
Potomac Boat Club was created in 1908.
Texan brig Potomac was created in 1838.
The address of the Shenandoah And Potomac Valley Garden Railroad Club Inc is: Po Box 82, Shepherdstown, WV 25443-0082