Bibliography
Crawford, J. J., 1894, Gold-Nevada County: California Min. Bur. Rept. 12, pp. 185-203.
Crawford, J. J., 1896, Gold-Nevada County: California Min. Bur. Rept. 13, pp. 234-271.
Farmin, Rollin, 1938, Dislocated inclusions in gold quartz veins at Grass Valley, California: Econ. Geology,vol. 33, pp. 579-599.
Farmin, Rollin, 1941, Occurrence of scheelite in Idaho.Maryland Mines at Grass Valley, California: California Div. Mines Rept. 37, p. 224.
Hanks, H. G., 1886, Nevada County: California Min. Bur. Rept. 6, pp. 44-49.
Hobson, J. B., 1890, Grass Valley district: California Min. Bur. Rept. 10, pp. 370-384.Hobson, J. B., and Wiltsee, E. A., 1893, Grass Valley mining district: California Min. Bur. Rept. 11, pp. 267-285.
Hoover, H. c., 1896, Some notes on crossings: Min. and Sci. Press, vol. 72, pp. 166-167.
Howe, Ernest, 1924, The gold ores of Grass Valley, California: Econ. Geology, vol. 19, pp. 595-621.
Irelan, William, 1888, Grass Valley district: California Min. Bur. Rept. 8, pp. 425-435.
Johnston, W. D., Jr., 1932, Geothermal gradient at Grass Valley, Calif.: Washington Acad. Sci. Jour., vol. 22, pp. 267-271.
Johnston, W. D., Jr., 1940, The gold-quartz veins at Grass Valley, California: U. S. Geol. Survey Prof. Paper 194, 101 pp.
Johnston, W. D., Jr., and Closs, Ernst, 1934, structural history of the fracture systems at Grass Valley, Calif.: Econ. Geology, vol. 29, pp. 39-54.
Knaebel, J. B., 1931, The veins and crossings of the Grass Valley district: Econ. Geology, vol. 26, pp. 375-398.
Lindgren, Waldemar, 1895, Smartsville folio, California: U. S. Geol. Survey Geol. Atlas of the U. S., folio 18, 6 pp.
Lindgren, Waldemar, 1896, Nevada City special folio, California: U.S. Geol. Survey Geol. Atlas ·of the U. S., folio 29, pp.
Lindgren, Waldemar, 1896, Gold-quartz veins of Nevada City and Grass Valley districts: U. S. Geol. Survey, 17th Ann. Rept. pt. 2, pp. 1-262.
Logan, C. A., 1930, Nevada County, Grass Valley district: California Div. Mines Rept. 26, pp. 96-99.
Logan, C. A., 1941, Mineral resources of Nevada County-gold quartz mining: California Div. Mines Rept. 37, pp. 380-431.
MacBoyle, Errol, 1919, Nevada County, Grass Valley district: California Min. Bur. Rept. 16, pp. 14-30. In addition to the above references, many reports on mining methods, equipment, and mining activities in the district have appeared in various periodicals. Very many private reports also have been made