Hewett, D. F. (1881-?) Callaghan, Eugene (1904-1990) Moore, B. N. Nolan, Thomas Brennan (1901-1992) Rubey, William Walden (1898-1974) Schaller, Waldemar Theodore (1882-1967) Stany Zjednoczone. Geological Survey
Hewett, Donnell Foster (1881-?) Stany Zjednoczone. Geological Survey
Hewett, Donnell Foster (1881-?) Lupton, Charles Thomas (1878-1935) Stany Zjednoczone. Geological Survey
Hewett, Donnell Foster (1881-?) Katz, Frank James(1883-1930) Stose, George Willis (1869-1960) Miser, Hugh Dinsmore (1884-1969) Stany Zjednoczone. Geological Survey
Hewett, Donnell Foster (1881-?) Stany Zjednoczone. Geological Survey
Hewett, Donnell Foster (1881-?) Stany Zjednoczone. Geological Survey
Umpleby, Joseph Bertram (1883-1967) Westgate, Lewis Gardner (1868-1948) Ross, Clyde Polhemus (1891-1965) Hewett, Donnell Foster (1881-?) Stany Zjednoczone. Geological Survey