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Topic
- Rivers--Oregon 32
- Agriculture 15
- Cities and towns 12
- Coasts--Oregon 11
- Lumber trade 11
- Waterfalls 11
- Forests and forestry 10
- Formations (Geology) 7
- Log transportation 5
- Portraits, Group 5
- Bridges 4
- Dams 4
- Dwellings 4
- Mountains--Oregon 4
- Railroad cars 4
- Sawmills 4
- Agricultural laborers 3
- Forest fires 3
- Hops 3
- Mills and mill-work 3