References
Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 69-76.Clark, W.B. and Carlson, D.W., 1956, Mines and mineral resources of El Dorado County: California Division of Mines, California Journal of Mines and Geology, v. 52, p. 195.Duffield, W.A. and Sharp, R.V., 1975, Geology of the Sierra foothills melange and adjacent areas, Amador County, California: U.S. Geological Survey Professional Paper 827, 30 p.Irelan, W., Jr., 1888, Amador County, Keystone Consolidated Mining Company: California State Mining Bureau, 8th Annual Report of the State Mineralogist, p. 85-88.Logan, C.A., 1927, Amador County, Zeila Mine: California State Mining Bureau, 23nd Report of the State Mineralogist, p.184-185.Moore, L., 1968, Gold resources of the Mother Lode Belt, El Dorado, Amador, Calaveras, Tuolumne, and Mariposa counties, California: U.S. Bureau of Mines Technical Progress Report 5, p. 1-22.Schweickert, R.A., Hanson, R.E., and Girty, G.H., 1999, Accretionary tectonics of the Western Sierra Nevada Metamorphic Belt in Wagner, D.L. and Graham, S.A., editors, Geologic field trips in northern California: California Division of Mines and Geology Special Publication 119, p. 33-79.Storms, W.H., 1900, The Mother Lode region of California: California Mining Bureau Bulletin 18, p 45-49.Tucker, W.B., and Waring, C.A., 1916, Mines and mineral resources of El Dorado, Placer, Sacramento, and Yuba counties: California State Mining Bureau, 15th Report of the State Mineralogist, p. 293-295.Additional information on the Zeila Mine is available in file no. 322-2949 (CGS Mineral Reources Files, Sacrament).