Mertie, J. B. Jr. (1888-1980) United States of America. Geological Survey.
Ross, Clyde P. (1891-1965) United States of America. Geological Survey.
Smith, Philip S. (1877-1949) United States of America. Geological Survey.
Hawkes, H. E. (1912-1996) Hotz, Preston Enslow (1913- ) United States of America. Geological Survey.
Eckel, Edwin Butt (1906-1989) Yates, Robert G. (1910- ) Granger, A. E. (1911- ) United States of America. Geological Survey.
Ross, Clyde P. (1891-1965) United States of America. Geological Survey.
Staack, J. G. (1878- ) United States of America. Geological Survey.
Staack, J. G. (1878- ) United States of America. Geological Survey.
Callaghan, Eugene (1904-1990) United States of America. Geological Survey.
Callaghan, Eugene (1904-1990) Buddington, Arthur Francis (1890-1980) United States of America. Geological Survey.
Moffit, Fred H. (1874-1958?) United States of America. Geological Survey.
Bascom, Florence (1862-1945) Stose, George Willis (1869-1960) United States of America. Geological Survey.
Thom, Emma Mertins United States of America. Geological Survey.
Currier L. W. (1890-1970) United States of America. Geological Survey.
Collier, Arthur James (1866-1939) United States of America. Geological Survey.
Reed, John C. (1905-1993) Wells, Francis G. (1898-1969) United States of America. Geological Survey.
Lasky, Samuel G. (1901- ) United States of America. Geological Survey.
Bass, N. Wood (1893-1979) Dillard, W. Reese Hengst, Jess H. United States of America. Geological Survey.
Staack, J. G. (1878- ) United States of America. Geological Survey.
Staack, J. G. (1878- ) United States of America. Geological Survey.
Bass, N. Wood (1893-1979) Kennedy L. E. Dillard, W. Reese Leatherock, Otto Hengst, Jess H. United States of America. Geological Survey.
Eckel, Edwin Butt (1906-1989) United States of America. Geological Survey.
Bradley, W. H. Pepper, James F. United States of America. Geological Survey.
United States of America. Geological Survey. Ayvazoglou, W. (1871-1956). Editor