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- Geological Survey (U.S.)370
- United States. Forest Service83
- United States. Bureau of Land Management71
- Sanborn Map Company34
- United States. Bureau of Land Management, cartographer30
- United States. Forest Service. Rocky Mountain Region20
- Maberry, John O., 1935-14
- Bryant, Bruce, 1930-13
- Scott, Glenn Robert, 1918-13
- Cater, Fred W. (Fred William), 1912-11
- Hansen, Wallace R., 1920-11
- Hackman, Robert J.10
- Rand McNally and Company9
- Sanborn Map Company, cartographer, publisher9
- Nell, Louis, cartographer8
- Rand McNally and Company, cartographer8
- Sanborn-Perris Map Co.8
- Hillier, Donald E.7
- Roehler, Henry W.7
- Gable, Dolores J., 1922-6