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Creator
- Boyle, William F. Jr. 1
- Brown, James D. 1
- Bureau of Reclamation 1
- Byther, Harry S. 1
- Covington, Dwight A. 1
- Culter, Glynn R. 1
- Eck, William 1
- Frincke, Martin C. 1
- Hein, Eldor W. 1
- Hofman, Gotfried J. 1
- Johnson, Wilbur H. 1
- Lawton, Robert G. 1
- Newell, Lewis M. 1
- Nitta, William S. 1
- O'Leary, James E. 1
- Pritchard, Newton C. 1
- Soper, J. Frank 1
- United States. Department of the Interior 1
- Wilson, Bert f. 1
