Paige, Sidney (1880-1968) Foran, William Thomas (1893-1962) Gilluly, James (1896-1980) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Mertie, John Beaver (1888-1980) Foran, William Thomas (1893-1962) Stany Zjednoczone. Geological Survey