Keywords: Fort Jackson Site today.jpg National Park Service archaeological map as part of a boathouse project along the George Washington Memorial Parkway next to the Potomac River The red shading indicates the possibility of artifacts at the site of Fort Jackson a 19th-century fort constructed as part of the defenses of Washington D C during the American Civil War http //www nps gov/archive/gwmp/boathouse/l-Chapter3c-14thStreetBridge pd pdf PD-USGov original upload log page en wikipedia Fort_Jackson_Site_today jpg 2007-10-01 21 06 JKBrooks85 1560×1710× 892742 bytes <nowiki>National Park Service archaeological map as part of a boathouse project along the George Washington Memorial Parkway next to the Potomac River The red shading indicates the possibility of artifacts at the site of Fort Jackson a 19th-century fort constru</nowiki> Fort Jackson Virginia Maps of the American Civil War |