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Topic
- Oregon State University. Extension Service 61
- Agriculture 60
- Harvesting 14
- Agricultural laborers 10
- Livestock 10
- Universities and colleges--Faculty 9
- Sheep 6
- Wheat 6
- 4-H clubs 4
- Agricultural machinery 4
- Cranberries 4
- Weights and measures 4
- Cattle 3
- Orchards 3
- Raspberries 3
- Strawberries 3
- Alfalfa 2
- Farms 2
- Hops 2
- King, Arthur Solomon, 1906-1972 2
