Washington and Slavery. www.mountvernon.org. George Washington's Mount Vernon/Mount Vernon Ladies' Association. [2015-03-26]. (原始内容存档于2015-09-05). Thompson
Treasury on the Bureau of Alcohol, Tobacco, and Firearms Investigation of Vernon Wayne Howell Also Known as David Koresh. September 1993: 51, 77 [2016-01-01]
December 1989. The budget presumed a December 1, 1990, opening for the Mt. Vernon Square, Shaw–Howard University and U Street–Cardozo stations, and requested