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Topic
- Agricultural laborers 283
- Agriculture 91
- Agricultural machinery 39
- Harvesting 38
- Horses 29
- Strawberries 27
- Farm life 25
- Oregon State University. Extension Service 21
- Picketing 19
- Men 18
- Hops 15
- Crops 14
- Orchards 14
- Farmers 13
- Burning of land 12
- Harvesting machinery 12
- Wagons 12
- Farm equipment 11
- Indians of North America 11
- Wheat 10
