Kalähne, Alfred (1874-1946)
Königlich Preussische Geologische Landesanstalt
Koenen, Adolf von (1837-1915) Königlich Preussische Geologische Landesanstalt
Fuchs, Alexander (1874-1935) Königlich Preussische Geologische Landesanstalt
Deutsche Landwirtschafts-Gesellschaft
Schliepmann, Hans (1855-1929). Editor
Lesher, Carl Eugene (1885-?) United States of America. Geological Survey.
Wegemann, Carroll Harvey (1879-?) United States of America. Geological Survey.
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.
Burchard, Ernest Francis (1875-1961) United States of America. Geological Survey.
Knopf, Adolph (1882-1966) United States of America. Geological Survey.
Butler, Bert Sylvenus (1877-1960) Loughlin, Gerald Francis (1880-1946) United States of America. Geological Survey.
Butler, Bert Sylvenus (1877-1960) United States of America. Geological Survey.
Loughlin, Gerald Francis (1880-1946) United States of America. Geological Survey.
Hill, M. J. United States of America. Geological Survey.
Jones, Edward L. United States of America. Geological Survey.
Howell, Ralph W. Wegemann, Carroll Harvey (1879-?) United States of America. Geological Survey.
Wegemann, Carroll Harvey (1879-?) United States of America. Geological Survey.
Ashley, George Hall (1866-1951) United States of America. Geological Survey.
Burchard, Ernest Francis (1875-1961) United States of America. Geological Survey.
Ransome, Frederick Leslie (1868-1935) United States of America. Geological Survey.