Metzger, O.H., 1938, Gold mining and milling in the Wickenburg area, Maricopa and Yavapai Counties, Arizona: U.S. Bureau of Mines Information Circular I.C. 6991, 78 p.
Metzger, O.H.
U.S. Bureau of Mines Information Circular I.C. 6991, 78 p.
Mineral District, Ore, History, Production, Mining Engineering, Mineralization, Gold, Subsurface,
