Geological Survey (U.S.)Relief shown by contours. Contour interval 20 ft.; "Surveyed in 1885-86 and 95-97."; Text, "Description of the topographic map of the United States," on verso.46 x 69 centimetersJPEGUMN_ALMA:9973984909201701engU.S. Geological Survey (Washington?)PublicWashington and vicinity, Maryland-District of Columbia-VirginiaMapsVirginiaMarylandDistrict of Columbia1898University of Minnesota