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Topic
- Forests and forestry 6
- Forest fires--Prevention and control 3
- Lumber trade 2
- Mountains--Oregon 2
- Airplanes 1
- Bathhouses 1
- Canyons 1
- Capes (Coasts) 1
- Coasts--Oregon 1
- Fire lookout stations 1
- Footbridges 1
- Forest fires 1
- Formations (Geology) 1
- Lakes--Oregon 1
- Lodging-houses 1
- Log transportation 1
- Logging trucks 1
- Logging 1
- Mazamas (Portland, Or.) 1
- Mountaineering 1