TY  - BOOK
TI  - Population Schedules of the Seventh Census of the United States, 1850: Frederick, Hartford, Kent, Montgomery, Prince George's, Queen Anne's, St. Mary's, Somerset Counties
PY  - 1960///
CY  - Washington, DC
PB  - National Archives and Records Service
KW  - 1. Census
KW  - 2. Maryland, Census
ER  -