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- Henderson, Robert W. (Robert Wesley), 1914-2006 7940
- Oregon State University 1502
- United States. Department of Agriculture 561
- Oregon Hop Growers Association 112
- Oregon State University. Department of Journalism 64
- Oregon State University. Alumni Association 62
- Oregon State University. Sports Information Department 61
- United States. Agricultural Stabilization and Conservation Service 49
- Oregon State University. Agricultural Experiment Station 47
- Crop and Soil Science 38
- Oregon. Department of Transportation 21
- Oregon. Department of Fish and Wildlife. Research and Development Section 15
- United Nations 14
- Urban League of Portland (Portland, Or.) 14
- Food and Agriculture Organization of the United Nations 13
- Jefferson, Carol A. 13
- Music 13
- United States 12
- Oregon Rural Areas Development Committee 10
- Oregon State University. Extension Service 10