Butts, Charles (1863-1946) Moore, Elwood S. (1879-1966) United States of America. Geological Survey.
Meinzer, Oscar Edward (1876-1948) United States of America. Geological Survey.
Renick, Brink Coleman (1897- ) Riffenburg, Harry Buchholz (1891- ) United States of America. Geological Survey.
Fisher, D. Jerome (1896-1988) United States of America. Geological Survey.
Hunt, Charles Butler (1906-1997) United States of America. Geological Survey.
Hewett, Donnell Foster (1881-?) Callaghan, Eugene (1904-1990) Moore, B. N. Nolan, Thomas Brennan (1901-1992) Rubey, William Walden (1898-1974) Schaller, Waldemar Theodore (1882-1967) United States of America. Geological Survey.
Baker, Arthur Alan (1897-1996) United States of America. Geological Survey.
Mansfield, George Rogers (1875-1947) Boardman, Leona (1894-1957) United States of America. Geological Survey.
LaForge, Laurence United States of America. Geological Survey.
Cross, Whitman (1854-1949) Larsen, Esper Signius (1879-1961) United States of America. Geological Survey.
Nickles, John Milton (1859-1945) United States of America. Geological Survey.
Trowbridge, Arthur Carleton (1885-?) United States of America. Geological Survey.
Darton, Nelson Horatio (1865-1948) United States of America. Geological Survey.
Schaller, Waldemar Theodore (1882-1967) United States of America. Geological Survey.
Miser, Hugh Dinsmore (1884-1969) United States of America. Geological Survey.
Ray, James C. United States of America. Geological Survey.
Larsen, Esper Signius (1879-1961) Berman, Harry (1902-1944) United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Follansbee, Robert (1879-1952) Purton, Astley B. (1886-1962) Dickinson, W. E. United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) McGlashan, Harry Deyoe (1879- ) Henshaw, Fred Forbes (1884-1933) United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Baldwin, George Clyde (1884-1951) Parker, Glenn Lane (1884-1946) Paulsen, Carl G. Purton, Astley B. (1886-1962) Henshaw, Fred Forbes (1884-1933) United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Parker, Glenn Lane (1884-1946) Lamb, William Alfred (1881- ) United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Horton, Albert Howard (1875-1945) Burchard, E. D. King, Warren Raymond United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Soulé, S. B. Grosbach, H. E. Lee, Lasley (1887- ) Harrington, Arthur William (1888-1964) Pierce, Charles Henry (1878- ) Kinnison, Harvey Banks (1890- ) United States of America. Geological Survey.
Grover, Nathan Clifford (1868-1956) Lamb, William Alfred (1881- ) Soulé, S. B. Spiegel, Jacob Birk Grosbach, H. E. Beckman, Henry Claus (1888- ) United States of America. Geological Survey.