Relief shown by contours and spot heights"Geology based on field work by B. Denny and R. Jacobsen, 2005-2006 and W. J. Nelson, 1984-1985.""Digital cartography by J. Domier, M. Widener, and M. Turino, Illinois State Geological Survey.""Base map compiled by Illinois State Geological Survey ... ."Sheet 2 includes 1 stratigraphic column and 9 sectionsIncludes location map and index to adjoining quadranglesIncludes bibliographical references (p. 9-10 of text
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