National Archieves and Records Service, G. S. A. (1976). Federal population censuses 1790-1890: A catalog of microfilm copies of the schedules.
Chicago-viite (17. p.)National Archieves and Records Service, General Services Administration. Federal Population Censuses 1790-1890: A Catalog of Microfilm Copies of the Schedules. Washoington, 1976.
MLA-viite (8. p.)National Archieves and Records Service, General Services Administration. Federal Population Censuses 1790-1890: A Catalog of Microfilm Copies of the Schedules. 1976.
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