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       Author [Geographical and Geological Survey of the Rocky Mountain Region (U.S.), Jenney, Walter Proctor, 1849-1921, Newton, Henry, 1845-1877] Full Title Bird's eye view of the Black Hills to illustrate the geological structure. 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) Publisher Julius Bien 
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