Glasscock, C. B. The Big Bonanza. Indianapolis: Bobbs-Merrill Co., 1931.

Hans, Fred. The Great Sioux Nation. Chicago: Donahue, 1907.

Hayden, F. V. and Meek, F. B. “Remarks on Geology of the Black Hills,” Academy of Natural Science Proceedings. Philadelphia: Academy of Natural Science, 1858, X, 41-59.

Hough, Emerson. The Passing of the Frontier. New Haven: Yale University Press, 1921.

Kingsbury, G. W. History of Dakota Territory. Chicago: The S. J. Clarke Co., 1915.

Lake, Stuart. Wyatt Earp. Boston: Houghton Mifflin, 1931.

Mirsky, Jeannette. The Westward Crossings. New York: Alfred A. Knopf, 1946.

Newton, Henry. Geology of the Black Hills. Washington, D. C.: United States Geographical and Geological Survey, 1880.

O’Harra, C. C. “The Gold Mining Industry of the Black Hills,” Black Hills Engineer, XIX (January, 1931), 3-9.

——. The White River Badlands. Department of Geology, No. 13. Rapid City: South Dakota School of Mines, 1920.