2002. Powell, Richard L., cartographer. This map data was compiled in 1997 from information available at the time, but was unpublished until 2002; the map does not reflect any changes in ... Indiana Geological Survey.
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1997. Frushour, Samuel S., Harper, Denver, Kersey, Rea Williams, and Powell, Richard L. This map data was compiled in 1997 from information available at the time, but was unpublished until until 2002; the map does not reflect any chang... Indiana Geological Survey.
1956. Patton, John B. (John Barratt), 1915-. Base from Map of Indiana, 1950 edition, published by the U.S. Geological Survey. Minor revisions and additions made from Indiana Department of Cons... Indiana Geological Survey.
1972. Forsyth, Jane L. (Jane Louise), 1921-, Gooding, Ansel Miller, Gray, Henry Hamilton,1922-cartographer., and Schneider, Allan F. (Allan Frank),1926-cartographer. Base map modified from Army Map Service, Map NJ 16-3, 1964.' Includes text, cross section, columnar section, diagram, schematic section, ancillary ... Indiana Geological Survey.
1958. Wayne, William J.(William John), 1922-cartographer. Base modified from U.S. Geological Survey Base map of Indiana, 1953.; Reprinted with minor modifications, 1963. Scale 1:1,000,000. Indiana Geological Survey.
1968. Ault, Curtis H. and Webb, William M. Includes generalized columnar section, 'Sectionized township,' and index of producers of clay and clay products. 'Base modified from U.S. Geologica... Indiana Geological Survey.
1970. Purcell, Roger L. Includes geological cross-section. Scale approximately 1:1,800,000. Adapted from Regional Geologic Map series, Indiana Geological Survey; drafted b... Indiana Geological Survey.
1951. Moran, W. H.(William H.), cartographer. November, 1951.; Blue line print.; Traced from compilation proof sheets of new base map of Indiana, prepared by the U.S. Geological Survey. Minor a... Indiana Geological Survey.
1998. Shaffer, Nelson R. Includes pie graph and list of further reading. '1984 (Modified 1997).' Scale 1:500,000 By Nelson R. Shaffer. Indiana Geological Survey.
1972. Powell, Richard L. Scale approximately 1:380,000 Compiled by Richard L. Powell ... Indiana Geological Survey.