Geological map of the Black Hills of Dakota.
Geological map of the Black Hills of Dakota by Henry Newton, E.M. Dept. of the Interior, U.S.G. and G. Survey, J.W. Powell, in charge. Geology of the Black Hills by Henry Newton, E.M. (Julius Bien, Lith. New York, 1879)
David RumseyNewton, Henry, 1845-1877
1879
1879
Julius Bien
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