Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Soils, 1913.' 'A Hoen & Co Lith Baltimore Md.' Scale 1:63,360. 1 inch = 1 mile. U.S. Department of Agriculture, Bureau of Soils; State of Indiana, Department of Geology; soils surveyed by W.E. Tharp of the U.S. Department of Agriculture and E.J. Quinn of the Indiana Department of Geology.
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