United States. Corps of Topographical Engineers. McDowell, Irvin, 1818-1885. Schedler, J. (Joseph) cartographic Topographic maps. lcgft [Washington, D.C.? : s.n., 1862] eng Relief shown by hachures. Depths shown by soundings. Shows forts and batteries in the District of Columbia and immediate vicinity. At head of title: Surveys for military defences. Accompanied by sheet: Presented to Brig. Genl. S. Williams, A.A. Genl. Hd. Qrs. Army, by order of Maj. Genl. McClellan, Comd. in Chf. U.S.A. [signed] A.W. Whipple, Maj. T.E. [1] leaf ; 21 x 13 cm. Mounted on cloth backing. Includes "Data used in compilation," table of "Elevations above tide water," and "Geological profile of Loudoun County." Library of Congress. Civil War maps (2nd ed.), 466 Fortification--Virginia--Maps. Fortification--Washington (D.C.)--Maps. Fortification--Washington Metropolitan Area--Maps. Virginia--History--Civil War, 1861-1865--Maps. Washington (D.C.)--History--Civil War, 1861-1865--Maps. Washington Metropolitan Area--History--Civil War, 1861-1865--Maps. Virginia--Maps. Washington (D.C.)--Maps. Washington Metropolitan Area--Maps. United States United States Washington. United States Washington Metropolitan Area. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g3881s.cw0466000