Drummond

Chicago citation style
Geological Survey (U.S. Drummond. 1971. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2246. (Accessed April 9, 2020.)
APA citation style
Geological Survey (U.S, (1971) Drummond. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2246
MLA citation style
Geological Survey (U.S. Retrieved from the Digital Public Library of America <http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2246>.
Note: These citations are programmatically generated and may be incomplete.