Marvelous and highly detailed map of a portion of Wisconsin, with excellent detail south of the Wisconsin River, and above the Dells in the area of Grignon's Mills and Trading and Farming Establishment. The area south of the River has been surveyed and shows towns, roads, rivers, townships, etc. The surveys are just beginning in Sauk and Richland Counties. West of Green Bay, the Oneida Indians and a 300,000 acre tract are noted. Above Grignon Mills are Whitney Mills, Bloomers Mills and Conants Mills. An essential early map for Wisconsin Collectors. An essential map for American Map collectors, illustrating an important change in the history of printed maps and the only truly American cartographic publishing innovation.