1940 Census Enumeration District Descriptions - Illinois - Mercer County - ED 66-1, ED 66-2, ED 66-3, ED 66-4, ED 66-5, ED 66-6, ED 66-7, ED 66-8

Chicago citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968). 1940 Census Enumeration District Descriptions - Illinois - Mercer County - ED 66-1, ED 66-2, ED 66-3, ED 66-4, ED 66-5, ED 66-6, ED 66-7, ED 66-8. 1850-01-01/1950-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5848149. (Accessed September 18, 2018.)
APA citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968), (1850-01-01/1950-12-31) 1940 Census Enumeration District Descriptions - Illinois - Mercer County - ED 66-1, ED 66-2, ED 66-3, ED 66-4, ED 66-5, ED 66-6, ED 66-7, ED 66-8. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5848149
MLA citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/5848149>.
Note: These citations are programmatically generated and may be incomplete.