TY - BOOK TI - Seventh United States Census - 1850: District of Columbia PY - 1960/// CY - Washington, DC PB - National Archives and Records Service KW - 1. Census KW - 2. District of Columbia N2 - MF-C-037 Wards 1,2,3 MF-C-038 Wards 5,6,7 ER -