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- Forests and forestry 7
- Beavers 2
- Deers 2
- Portraits 2
- Trapping 2
- Wildlife relocation 2
- Aspen 1
- Camps 1
- Civilian Conservation Corps (U.S.) 1
- Forest fires 1
- Forest fires--Prevention and control 1
- Formations (Geology) 1
- Hunting 1
- Log transportation 1
- Logging trucks 1
- Lumber trade 1
- Oregon. State Game Commission 1
- Ponderosa pine 1
- Ranger stations 1
- Windmills 1