1949. Blueline. '1937.' 'State revised to January 1, 1949.' Scale approximately 130,000. Not 1 inch =1 mile.'; Polyconic projection Prepared by the State... State Highway Commission of Indiana.
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1949. United States. Army Map Service. Relief shown by contours and spot heights.; Includes Index to boundaries and Index to adjoining sheets.; At head of map: Sheet 3763 I SE, A.M.S. se... Army Map Service, Corps of Engineers, Department of the Army.