1906. Mann, Charles J. and Tharp, W. E. (William Edgar). Detached from: Soil survey of Greene County, Indiana / W.E. Tharp and Charles J. Mann. In 36th Annual report of Department of Geology and Natural R... Indiana Department of Geology and Natural Resources and William B. Burford.
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1906. Mann, Charles J. and Tharp, W. E. (William Edgar). Shows soil types by colors and symbols. Scale 1:63,360. 1 inch = 1 mile. U.S. Dept. of Agriculture, Bureau of Soils; Indiana Agricultural Experimen... The Bureau.