Simmons, C. S. (Charles Shaffer),1900-cartographer., Burke, R. T. Avon (Richard Thomas Avon),1878-cartographer., Bushnell, T. M. (Thomas Mark),1889-1976, Adams, J. E. (James Edward),1898-cartographer., and Ulrich, H. P. (Herbert Paul),1904-cartographer.
Shows soil types classification by colors and symbols. 'Field operations Bureau of Chemistry and Soils 1930. 'Williams & Heintz Co. Wash. D.C.' Scale 1:63,360. 1 inch = 1 mile. Soils surveyed by C.S. Simmons and R.T. Avon Burke, U.S. Department of Agriculture, and T.M. Bushnell, J.E. Adams and H.P. Ulrich, Purdue University Agricultural Experiment Station.