National Geographic Society (U.S.). Map DepartmentRelief shown by gradient tints and hachures.; Includes 3 inset maps.; Inset maps: Washington and vicinity -- Baltimore and vicinity --Wilmington and vicinity.29 x 45 centimetersJPEGUMN_ALMA:9919091480001701engNational Geographic Society (Washington, D.C)PublicMaryland, Delaware and District of ColumbiaMapsDistrict of Columbia--WashingtonMaryland--WashingtonDelaware--WashingtonDistrict of ColumbiaMarylandDelaware1925University of Minnesota