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Hutchison, Harold C. (Harold Christy), 1925-. Distribution, structure, and mined areas of coals in Fountain and Warren Counties, and the northernmost part of Vermillion County, Indiana. [JPEG]. Indiana Dept. of Conservation, Geological Survey. Retrieved from https://geodata.lib.berkeley.edu/catalog/07b23648-56df-4ad7-9649-729a54947b46