1938. Aretz, R. and Magnusson, L. R. Blue line print. '1953.' 'Prepared by L.R. Magnusson.' 'Drawn by R. Aretz.' Scale approximately 1:63,360.; Polyconic projection By Joint Highway Re... Joint Highway Research Project, Purdue University.
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1941. Includes chart, with some figures corrected by hand, showing type of land use, acreage, and recommended use. Scale not given. Prepared by Lawrence ... The Committee.
1907. Also shows railroads, dirt roads and improved roads, school houses, and churches. Detached from: Soil survey of Monroe, Brown, Lawrence, Martin, Or... Indiana Department of Geology and Natural Resources and William B. Burford.
1922. Tharp, W. E.(William Edgar), cartographer. Shows soil types classification by colors and symbols.; Soils surveyed by W.E. Tharp, of the U.S. Department of Agriculture, in charge, and T.M. Bu... The Bureau.