Capps, Stephen Reid (1881-1949) United States of America. Geological Survey.
Mertie, John Beaver (1888-1980) United States of America. Geological Survey.
Moffit, Fred Howard (1874-1958?) United States of America. Geological Survey.
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
Stewart, B. D. United States of America. Geological Survey.