site of future Potomac Yard in 1897
Source: US Geological Survey (USGS), Alexandria, VA 1:125,000 topographic quadrangle (1897)`
Potomac Yard in 1945
Source: US Geological Survey (USGS), Alexandria, VA 1:31.680 topographic quadrangle (1945)`
Potomac Yard in 2019
Source: US Geological Survey (USGS), Alexandria, VA 1:31.680 topographic quadrangle (2019)