Scale ca. 1:63,360. LC Civil War Maps (2nd ed.), 594 At head of title: Campaign map, Army of the Potomac, map no 3. Shows fortifications, towns, roads, railroads, houses, names of residents, vegetation, drainage, and relief by hachures. Description derived from published bibliography. Available also through the Library of Congress web site as raster image. 1 map, 89 x 70 cm.