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- 4-H clubs 12
- Indians of North America 8
- Agriculture 6
- Oregon State University. Extension Service 4
- Cattle 2
- Confederated Tribes of the Warm Springs Reservation of Oregon 2
- Fences 2
- Fisheries 2
- Landforce, Andy 2
- Agricultural machinery 1
- Alfalfa 1
- Animal feeding 1
- Charts, diagrams, etc 1
- Harvesting 1
- Irrigation 1
- Legislators 1
- Meetings 1
- Merritt, Dick 1
- Portraits, Group 1
- Soils 1