Map of Indiana showing bedrock units containing thick deposits of limestone and dolomite and locations of coal-fired power plants and crushed-stone mines [cartographic material] / compiled by Curtis H. Ault, 1994 ; drafted by Kari A. Lancaster, February, 1994
Scale approximately 1:500,000. (W 88 030-́-W 84 030/́N 42 000-́-N 37 030)́.
"This map was compiled and published by the Indiana Geological Survey..." "Base map digitized from 1978 U.S. Geological Survey map of Indiana. Scale 1:500,000." In upper margin: Indiana University, Indiana Geological Survey. Includes notes. Printed in blue ink.