Richardson, George Burr (1872-1949) United States of America. Geological Survey.
Bass, N. Wood (1893-1979) Kennedy L. E. Dillard, W. Reese Leatherock, Otto Hengst, Jess H. United States of America. Geological Survey.
Shaw, Eugene Wesley (1881-1935) Matson, George Charlton (1873-?) Wegemann, Carroll Harvey (1879-?) United States of America. Geological Survey.
Dane, Carle Hamilton (1900-1968) Rothrock, Howard E. (1893-1983) Williams, James Steele (1896-1957) United States of America. Geological Survey.
Knechtel, Maxwell M. (1897-1984) United States of America. Geological Survey.
Baker, Arthur Alan (1897-1996) United States of America. Geological Survey.
Woodring, Wendell Phillips (1891-1983) Roundy, Paul Vere (1884-1937) Farnsworth, H. R. United States of America. Geological Survey.
Hendricks, Thomas Andrews (1907-1985) United States of America. Geological Survey.
Collier, Arthur James (1866-1939) United States of America. Geological Survey.
Bass, N. Wood (1893-1979) Dillard, W. Reese Hengst, Jess H. United States of America. Geological Survey.
Miser, Hugh Dinsmore (1884-1969) United States of America. Geological Survey.