- Santa Maria Mining District (Planet Mining District; Swansea Mining District; Bill Williams Mining District)
| (n.d.) ADMMR Mines Database, Arizona Geological Survey. Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 172 (Table 4) Harrer (1964): 130-133 Cummings (1946) |
Iron King Mine, Santa Maria Mining District, Buckskin Mountains, La Paz County, Arizona, USA