Coal resources of Illinois. Davis, Murphysboro, and Seelyville coals [cartographic material] : with Assumption, Bell, Houchin Creek (formely Summum (No. 4)), Litchfield, coals near Makanda, Mt. Rorah, New Burnside, Reynoldsburg, Rock Island (No. 1), "Seahorne," Survant (formerly Shawneetown), Wiley, Willis, and Wise Ridge coals / compiled by Janis D. Treworgy and Margaret H. Bargh ; drafted by Kate Hunter.
Relief shown by spot heights. "Base map compiled and edited by the U.S. Geological Survey ... Railroads updated to 1982." "Production of this map was funded in part by the U.S. Bureau of Land Management and the Illinois Coal Association." Includes inset showing sources of information and 3 other insets.
Illinois Dept. of Energy and Natural Resources, Illinois State Geological Survey
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