Keywords: Fort-lyon-alexandria-virginia-vhs00032-1-.jpg en Illustrates Alexandria's central position in the defense of Washington where at least 12 outlying forts surrounded the city Military camps of various Union officers such as Samuel Peter Heintzelman are indicated on this map LOC-map ndlpcoop gvhs01 vhs00032 Robert Knox Sneden 1832-1918 1862-05 PD-old-auto 1918 Maps of Alexandria Virginia Arlington County Virginia History of Washington D C Forts in Virginia Old maps of Virginia in the American Civil War Robert Knox Sneden Fort Lyon Virginia |