Shaw, Eugene Wesley (1881-1935) United States of America. Geological Survey.
Rogers, Gaillard Sherburne (1889-1919) United States of America. Geological Survey.
Collier, Arthur James (1866-1939) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Matson, George Charlton (1873-?) Hopkins, Oliver Baker United States of America. Geological Survey.
Matson, George Charlton (1873-?) Hopkins, Oliver Baker United States of America. Geological Survey.
Hopkins, Oliver Baker United States of America. Geological Survey.
Fath, Arthur Earl (1887-1976) United States of America. Geological Survey.
Hopkins, Oliver Baker United States of America. Geological Survey.