Geological Survey (U.S.)Relief shown by contours and spot heights.; Includes notes.117 x 106 centimetersJPEGUMN_ALMA:9973974700801701engDepartment of the Interior, U.S. Geological Survey (Washington)PublicWashington and vicinity, Maryland, District of Columbia, VirginiaMapsDistrict of Columbia--WashingtonMaryland--WashingtonVirginia--WashingtonDistrict of ColumbiaMarylandVirginia1917University of Minnesota