Association of American State Geologists. California State Automobile Association Clubs: Commonwealth (California), Engineers (San Francisco).
Walter Wadsworth BRADLEY, American State Mineralogist. Member of American Institute, of Mining and Metallurgical Engineers; National Geographical Society; Sons of American Revolution; Association of American State Geologists; California State Automobile Association Clubs: Commonwealth (California), Engineers (San Francisco).
Elaine Bradshaw, November 10, 1928. Mining Operations in California, Mexico and Idaho, 1901-1902, 1905-1912. Associate Editor, Mining and Scientific Press, San Francisco, 1903-1904.
Librarian, 1912; Field Assistant, 1913. Statistician and Curator, 1915. Deputy State Mineralogist, 1923.
State Mineralogist, August since 1928. Also designated Chief of Division of Mines, California State Mining Bureau, Division of Mines, State Department of Natural Resources, August since 1929.