Wegemann, Carroll Harvey (1879-?) Heald, Kenneth Conrad (1888-1971) United States of America. Geological Survey.
Mansfield, George Rogers (1875-1947) United States of America. Geological Survey.
Lupton, Charles Thomas (1878-1935) United States of America. Geological Survey.
United States of America. Geological Survey. Ayvazoglou, W. (1871-1956). Editor
United States of America. Geological Survey. Ayvazoglou, W. (1871-1956). Editor
Capps, Stephen Reid (1881-1949) Tuck, Ralph (1904-?) United States of America. Geological Survey.
Capps, Stephen R. (1881-1949) United States of America. Geological Survey.
Lovering, Thomas Seward (1896-1991) United States of America. Geological Survey.
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
United States of America. Geological Survey. Skitsky V. L. Editor
Ross, Clyde P. (1891-1965) United States of America. Geological Survey.
Currier L. W. (1890-1970) United States of America. Geological Survey.
Moffit, Fred Howard (1874-1958?) United States of America. Geological Survey.
Staack, J. G. (1878- ) United States of America. Geological Survey.
Tuck, Ralph (1904-?) United States of America. Geological Survey.
Hill, James Madison (1884-?) United States of America. Geological Survey.
Moffit, Fred H. (1874-1958?) United States of America. Geological Survey.
Pierce, William Gamewell (1904-1994) United States of America. Geological Survey.
Mertie, John Beaver (1888-1980) United States of America. Geological Survey.
Reeves, Frank (1886-1986) Ross, Clyde Polhemus (1891-1965) United States of America. Geological Survey.
Capps, Stephen Reid (1881-1949) United States of America. Geological Survey.
Ross, Clyde P. (1891-1965) United States of America. Geological Survey.
Collier, Arthur James (1866-1939) United States of America. Geological Survey.
Shenon, Philip John (1897-1966) United States of America. Geological Survey.