Francis J Pierson and Dennis J Gallagher, Getting to Know Denver: Five Fabulous Walking Tours, Denver: Charlotte Square, 2006, ISBN978-0-914449-20-1, p. 91.
Thomas Jacob Noel and John Fielder, Colorado, 1870–2000, Revisited: The History Behind the Images, Englewood, Colorado: Westcliffe, 2001, ISBN978-1-56579-389-7, p. 23.
Stephen J. Leonard and Thomas Jacob Noel, Denver: Mining Camp to Metropolis, Niwot, Colorado: University Press of Colorado, 1990, ISBN978-0-87081-240-8, p. 452.
Caroline Bancroft, Gulch of Gold: A History of Central City, Colorado, Denver: Sage, 1958, OCLC1709789, p. 275.