Fucciolo, Christine S.; Benton, Steven E.; Carr, Keith W.; Ketterling, D. Bradley; Lake, Marshall A.; Miller, Michael V.; Miner, James J.; Pociask, Geoffrey E.; Robinson, Bonnie J.; Sabatini, Paula; Watson, Blaine A.; Weaver, Kelli D.; Werner, Katherine J. (Illinois State Geological Survey, 2002)