Statistics for occurrence #1 of “northern Wisconsin” in entry united-states-of-america-wisconsin of Harper's Encyclopedia of United States History:

... northern Wisconsin
One of the Western States of the United States, lying between lat. 42° 27′ and 47° N. and long. 86° 53&prim...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.