Tharp, W. E. (William Edgar),cartographer,surveyor., Peacock, R. H.,surveyor., and Rose, C. M.,surveyor.
Shows soil types classification by colors and symbols. 'A. Hoen & Co. Lith. Baltimore, Md.' 'Field operations Bureau of Soils 1914.' Scale 1:63,360. 1 inch = 1 mile. U.S. Dept. 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 R.H. Peacock and C.M. Rose fo the Indiana Department of Geology.