Hopkins, Griffith Morgan, Jr. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 Philadelphia, Jacob Weiss, c1861. eng "Entered according to act of Congress in the year 1861 by G. M. Hopkins." General map of eastern and central Maryland, Washington, D.C., and northern Virginia. Description derived from published bibliography. Scale ca. 1:450,000. Library of Congress. Civil War maps (2nd ed.), Maryland--History--Civil War, 1861-1865--Maps. Virginia--History--Civil War, 1861-1865--Maps. District of Columbia--History--Civil War, 1861-1865--Maps. United States United States United States Available also through the Library of Congress web site as raster image. http://hdl.loc.gov/loc.gmd/g3840.cw0241500