Otis E. Young. Western Mining: An Informal Account of Precious-metals Prospecting, Placering, Lode Mining, and Milling of the American Frontier from Spanish Times to 1893. Norman: University of Oklahoma Press, 1970.
Ronald M. James. The Roar and the Silence: A History of Virginia City and the Comstock Lode. Reno: University of Nevada Press, 1998.