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- Signs and signboards 74
- Oregon--History 12
- University of Oregon 12
- College campuses 11
- Irrigation 6
- Beans 5
- Drainage 3
- Mulching 3
- Potatoes 3
- Croplands 2
- Crowds 2
- Elections 2
- Exhibitions 2
- Fertilizers 2
- Franklin D. Roosevelt Lake (Wash.) 2
- Future Farmers of America 2
- Laboratories 2
- Lakes 2
- Legumes 2
- Oceanography 2
