Northline

Chicago citation style
Geological Survey (U.S. Northline. 1974. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2745. (Accessed February 19, 2020.)
APA citation style
Geological Survey (U.S, (1974) Northline. Retrieved from the Digital Public Library of America, http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2745
MLA citation style
Geological Survey (U.S. Retrieved from the Digital Public Library of America <http://content.wisconsinhistory.org/cdm/ref/collection/maps/id/2745>.
Note: These citations are programmatically generated and may be incomplete.