- Johnson, William D., Jr.6
- Norris, Ronald L. (Ronald Lee)5
- Fairer, G. M.3
- Johnson, William D.3
- Geological Survey (U.S.)2
- Lemmon, Robert E.2
- Smith, Avery E.2
- Ball, Thomas E.1
- Luft, Stanley Jeremie, 1927-1
- Norris, Ronald L.1
- Theis, C. V., cartographer1
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