Fath, Arthur Earl (1887-1976) Moulton, Gail Francis (1898-1974) Stany Zjednoczone. Geological Survey
Knappen, Russell Stafford (1892-1982) Moulton, Gail Francis (1898-1974) United States of America. Geological Survey.
Hall, George Martin (1891-1941) Thom, William Taylor (1891-1979) Wegemann, Carroll Harvey (1879-?) Moulton, Gail Francis (1898-1974) United States of America. Geological Survey.