Geological Survey (U.S.)Compiled in 1970. Includes population key. Source data U.S. Dept. of the Interior - Geological Survey topographic maps. U.S. Dept of the Army - Corps of Engineers topographic maps.Imprint: [Reston, Va.] : U.S. Geological Survey, 1973Dimensions: 91 x 59 cm; Scale: 1:500,000Coordinates: W0880700 W0844500 N0414500 N0374600JPEG4552295b-3dd0-486c-98f6-32c9774776c4G4091.C2 1973 .G4engGeological Survey (U.S.)PublicMapsState of lndianaMapsIndiana1973Indiana University