Includes generalized columnar section, "Sectionized township," and index of producers of clay and clay products. "Base modified from U.S. Geological Survey, Base map of Indiana, 1950."
Imprint: [Bloomington] : Indiana Geological Survey, 1968.
Dimensions: 51 x 64 cm; Scale: 1:1,000,000
Coordinates: W0880500 W0844700 N0414500 N0374600