Esko

Chicago citation style
Geological Survey (U.S. Esko. 1954. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2291. (Accessed December 15, 2019.)
APA citation style
Geological Survey (U.S, (1954) Esko. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2291
MLA citation style
Geological Survey (U.S. Retrieved from the Digital Public Library of America <http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2291>.
Note: These citations are programmatically generated and may be incomplete.