Citation

Hutchison, Harold C.(Harold Christy), 1925-cartographer.. 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://earthworks.stanford.edu/catalog/07b23648-56df-4ad7-9649-729a54947b46