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Start Over Author Geographical and Geological Survey of the Rocky Mountain Region (U.S.) Publisher U.S. Geological Survey (Washington, D.C) Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Geological map of the Black Hills of Dakota

Maps University Of Minnesota Public content
1879. Geographical and Geological Survey of the Rocky Mountain Region (U.S.), Newton, Henry, 1845-1877, and Powell, John Wesley, 1834-1902. 1 in. = 4 miles. (W 104°45ʹ--W 102°15ʹ/N 44°45ʹ--N 43°30ʹ). Relief shown by contours, hachures and spot heights. "Field work 1875. Publication ... U.S. Geological Survey (Washington, D.C).

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