Map
Vegetation types of California (exclusive of deserts and cultivated lands)1932 – 1939
U.S. Forest Service
Map
Potential natural vegetation of the conterminous United States1964
Küchler, A. W. (August William), 1907-1999.
Map
Potential natural vegetation of the conterminous United States1964
Küchler, A. W. (August William), 1907-1999.
Map
Forest Cover in Illinois 1820-1980 with maps on forest composition, volume, diversity and coverJune 1990
Illinois Natural History Survey
Document
Illinois Natural History Survey: Results of an Investigation on Endangered Plants Without Known Extant Populations, and Recommendations for Changes in Their Listing StatusMarch 11 1988
Bowles, Marlin L., Robertson, Kenneth R., Burton, Philip J., Ketzner, David M., Solecki, Mary Kay, Taft, John B., Ulaszek, Eric F.
Document
Vegetational Mapping and Analysis of North Slope Forest Communities Within the Morton Arboretum, Lisle, Illinois.July 18 1974
Doolittle, Jim, Rhoads, Dana