Earth Partnership for Schools
Provides a view of Wisconsin vegetation in the 1830s. Print size can be increased to facilitate reading the key.
"Original Vegetation Map compiled from U.S. General Land Office notes by Robert W. Finley, Professor of Geography Emeritus, University of Wisconsin Extension, University of Wisconsin Center System 1976. Based upon a map designed and prepared by the Cartographic Laboratory, UW-Madison. Digital version prepared by Maribeth Milner,under the direction of Steve Ventura, UW-Madison.
"County boundaries from the United States Geological Survey, 1:100,000-scale Digital Line Graphs." (From the WDNR web site.)