- Geological Survey (U.S.)9
- Hansen, Wallace R., 1920-9
- Roehler, Henry W.3
- Hail, William James, 1922-2
- McKay, E. J.2
- AAA Engineering and Drafting1
- Cullins, Henry L.1
- Dyni, John R.1
- Rowley, Peter D.1
- Tweto, Ogden, 1912-19831
- United States. Bureau of Land Management. Colorado State Office1
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