1950 Census Enumeration District Maps - Pennsylvania (PA) - Lehigh County - Urbanized Area, Allentown-Bethlehem - ED 39-47, 39-70

Chicago citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011). 1950 Census Enumeration District Maps - Pennsylvania (PA) - Lehigh County - Urbanized Area, Allentown-Bethlehem - ED 39-47, 39-70. 1880-01-01/1990-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/36433368. (Accessed November 18, 2018.)
APA citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011), (1880-01-01/1990-12-31) 1950 Census Enumeration District Maps - Pennsylvania (PA) - Lehigh County - Urbanized Area, Allentown-Bethlehem - ED 39-47, 39-70. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/36433368
MLA citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/36433368>.
Note: These citations are programmatically generated and may be incomplete.