Tripoli

Chicago citation style
Geological Survey (U.S. Tripoli. 1971. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/3063. (Accessed February 21, 2020.)
APA citation style
Geological Survey (U.S, (1971) Tripoli. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/3063
MLA citation style
Geological Survey (U.S. Retrieved from the Digital Public Library of America <http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/3063>.
Note: These citations are programmatically generated and may be incomplete.