Photograph Harney Peak Tin Mining Company's Plant at Hill City, S. D., circa 1901
Mines and Mining in the Black Hills, by Burlington and Missouri River Railroad Company, Passenger Department, Burlington route, 1901
Cleophas Cisney O'Harra, Black Hills Handbook Company, 1913 - Black Hills (S.D. and Wyo.)
Tin Concentrating Plants, Harney Peak District, 1883 - 1892, Hill City, Keystone, Glendale, Tinton
