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

...to the Mississippi River......1680 Father Louis Hennepin, with Duluth, journeys from Lake St. Francis to Green Bay by way of the Wisconsin and Fox rivers......1680 Pierre le Seuer reaches the Mississippi River via the Fox and Wisconsin......1683 Nicholas Perrot, appointed commandant of the West, winters near Trempeleau, which he reaches via the Fox and Wisconsin rivers from Green Bay......1685 Fath...
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