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- Geological Survey (U.S.)43
- Geological Survey (U.S.), issuing body15
- Luft, Stanley Jeremie, 1927-12
- United States. Bureau of Land Management10
- Hobbs, S. W. (Samuel Warren), 1911-7
- Colton, Roger B. (Roger Burnham), 1924-5
- Ross, Clyde P. (Clyde Polhemus), 1891-19655
- United States. Soil Conservation Service5
- National Operations Center (U.S.), editor4
- United States4
- United States. Bureau of Land Management, cartographer4
- Darton, Nelson Horatio, 1865-19483
- Hays, William Henry, 1922-3
- Meier, Donald H.3
- Raymond, William H.3
- Taylor, Richard B. (Richard Bartlett)3
- United States. Forest Service3
- United States. Natural Resources Conservation Service3
- Carter, Claire2
- Colorado Agricultural Experiment Station2