By Charles E. Wier and Henry H. Gray. Geology by H.H. Gray [and others]. Drafted by R. E. Judah and W. H. Moran. Base modified from Army Map Service map NJ 16-2, 1957. Indiana Geological Survey in cooperation with Illinois State Geological Survey. Transverse Mercator projection. Relief shown by profile. Includes geological cross-section/profile, geological time table, columnar section showing bedrock units with accompanying geological time table, schematic section showing relationships of unconsolidated deposits, an index map, and sectionized township diagram.
Imprint: [Indianapolis] : Indiana Geological Survey, 1961
Dimensions: on sheet 74 x 105 cm