De Russy, Lewis G. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 [S.l. 1864?] eng Pen and ink manuscript map drawn on tracing linen showing soundings and obstructions in Red River. A red line delineates the river channel. Stamped at bottom: From collection of David Dixon Porter. Description derived from published bibliography. Scale ca. 1:2,200. LC Civil War Maps (2nd ed.), Red River (Tex.-La.)--Maps. United States Red River. Available also through the Library of Congress web site as raster image. http://hdl.loc.gov/loc.gmd/g4012r.cw0240500