1949. State roads revised to January 1, 1949.; 1937.; Data obtained from State-wide Highway Planning Survey.; Includes location map and chart of Culture ... State Highway Commission of Indiana.
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1922. Tharp, W. E.(William Edgar), cartographer. Shows soil types classification by colors and symbols.; Relief shown by contours and hachures.; Soils surveyed by W.E. Tharp, Earl D. Fowler, L.S. ... The Bureau.