1949. Blueline.; State roads revised to January 1, 1949.; 1937.; Data obtained from State-wide Highway Planning Survey.; Includes location map and chart ... State Highway Commission of Indiana.
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1981. United States. Soil Conservation Service. "August 1981."; Includes location map. 98 x 55 centimeters Scale 1:50,000. The Service (Place of publication not identified.).
1927. Kunkel, D. R. (David Roy),1901-cartographer,surveyor. and Tharp, W. E. (William Edgar),cartographer,surveyor. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Chemistry and Soils, 1927.' 'Litho Eastern Offset Inc., Balto.'... The Bureau.