Geological Survey (U.S.) · Katherine Fitzpatrick-Lins · L. Imogene Doher · Peter A. Scholle · Phoebe L. Hauff · Robert W. Fleming · Valerie A. Milazzo · Keith A. Kvenvolden · Fred A. Taylor · Joseph Airey · United States. Bureau of Mines · United States. Interagency Oil and Gas Supply Project · Mark A. McMenamin
Jan. 1949 · U.S. Department of the Interior, Geological Survey