Bass, N. Wood (1893-1979) Dillard, W. Reese Hengst, Jess H. Stany Zjednoczone. Geological Survey
Dane, Carle Hamilton (1900-1968) Rothrock, Howard E. (1893-1983) Williams, James Steele (1896-1957) Stany Zjednoczone. Geological Survey
Woodring, Wendell Phillips (1891-1983) Roundy, Paul Vere (1884-1937) Farnsworth, H. R. Stany Zjednoczone. Geological Survey
Shaw, Eugene Wesley (1881-1935) Matson, George Charlton (1873-?) Wegemann, Carroll Harvey (1879-?) Stany Zjednoczone. Geological Survey
Pardee, Joseph Thomas (1871-1960) Schrader, Frank Charles (1860-1944) Stany Zjednoczone. Geological Survey
Pierce, William Gamewell (1904-1994) Hunt, Charles Butler (1906-1997) Stany Zjednoczone. Geological Survey