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A Post-Calumet Shoreline Along Southern Lake Michigan, Daniel K. Capps, Todd A. Thompson, Robert K. Booth, November 2004 (443 KB)
Environmental Geology of Lake and Porter Counties, Indiana: An Aid To Planning, Indian Department of Natural Resources, 1975 (5.12 MB)
Geologic Atlas of Cook County for Planning Purposes, Illinois DNR, Illinois State Geologcial Survey, July 2004 (8.90 MB)
Geology, Hydrology, and Water Quality of the Cambrian & Ordovician Systems in Northern Illinois, Illinois State Geological Survey, Illinois State Water Survey, 1985 (2.10 MB)
Geology of the Grand Calumet River Region , Timothy G. Fisher, Indiana University Northwest - Gary, 2000 (4.27 MB)
How the Ice Age
Shaped Indiana, Jerry Wilson, 2008 (226 KB)
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