Spencer, Arthur Coe (1871-1964) Paige, Sidney (1880-1968) United States of America. Geological Survey.
Paige, Sidney (1880-1968) Stany Zjednoczone. Geological Survey
Paige, Sidney (1880-1968) Foran, William Thomas (1893-1962) Gilluly, James (1896-1980) Stany Zjednoczone. Geological Survey