Gerdes, F. H. Bache, A. D. (Alexander Dallas), 1806-1867. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 [S.l. : s.n.] , 1864. eng Depths shown by soundings in feet. From its Report of the Superintendent of the Coast Survey, showing the progress of the survey during the year 1864 (Washington, Government Printeing Office, 1866). Map 31. Indicates Fort Cairo, naval depot, and "harbor for powder barges" at Mound City, soundings in feet, roads and streets, and vegetation. Upper left margin: No. 31. Description derived from published bibliography. LC Civil War maps (2nd ed.), Ohio River--History--Civil War, 1861-1865--Maps Mound City (Ill.)--Maps. Cairo (Ill.)--Maps. United States Ohio River. United States Mound City. United States Cairo. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g3707o.cw0213500