Barnard, J. G. (John Gross) - Boschke, A. - United States Coast Survey - Barnard, J. G.
Topographical map, 1st Brigade, defenses north of Potomac, Washington, D.C.
"1st September 1863." Relief shown by contours. Some buildings, lot lines, householders' names, forts, and vegetation. Covers environs of Forts De Russy, Stevens, Slocum, Totten, Slemmer, Bunker Hill, Saratoga, Thayer, Lincoln, and Batteries Sill and Jameson. India and red inks. Lacking edge and internal sections, assembled to 1 sheet, sectioned to 4 sheets, and mounted on cloth backing. Includes notes and 2 scale graphs. ...