Chicago Loop quadrangle : Illinois-Cook Co., 7.5 minute series (topographic) / mapped, edited, and published by the Geological Survey ; control by U.S.G.S., USC & GS, and City of Chicago

Chicago citation style
Geological Survey (U.S.). Chicago Loop quadrangle : Illinois-Cook Co., 7.5 minute series (topographic) / mapped, edited, and published by the Geological Survey ; control by U.S.G.S., USC & GS, and City of Chicago. 1956. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4568. (Accessed March 29, 2024.)
APA citation style
Geological Survey (U.S.), (1956) Chicago Loop quadrangle : Illinois-Cook Co., 7.5 minute series (topographic) / mapped, edited, and published by the Geological Survey ; control by U.S.G.S., USC & GS, and City of Chicago. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4568
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4568>.
Note: These citations are programmatically generated and may be incomplete.