Placer Gold Deposits of Arizona The Discovery of Gold in California Mine Locations of the Chilson Brothers History of Arizona Gold Mining The Gold Cañon Placer Mining Colony Silver Lake Basin: A Mining Chronicle History and Settlements of the Blue Mountains Gold Belt, Oregon 1900 History of the Elkhorn Mining District The Los Burros District, Monterey County, California The Mining Towns of California 1873 The Amalgamator - Skidoo 1909 Placer Examination - Principles and Practice City Stands Above Acres of Fire (1909) The Spenceville Copper Mine The Ingersoll Rock Drill (1879) The Ingersoll Rock Drill (1874) Rock-Boring with Diamonds Gold Districts of California Distribution of Principal Gold Producing Districts of the United States Historic Gold Production H.A.W. Tabor Two Montana Cities Part II Butte Principal Gold Producing Districts of the United States The Legacy of the Bunker Hill Mine Two Montana Cities Part I Helena The Colorado Gold Rush Historic Silver Production The Colorado Silver Boom
