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Creator
- Oregon City Enterprise Courier (Oregon City, Or.) 3
- Oregon Journal (Firm) 2
- Oregonian (Firm) 2
- Independence Enterprise (Independence, Or.) 1
- New York Times Company 1
- The Daily Astorian 1
Topic
- Dams 3
- Fishes--Conservation 3
- Rivers--Oregon 3
- Flood control 2
- Salmon 2
- Inland water transportation 1
- Lectures and lecturing 1
- Oregon Audubon Society 1
- Water--Pollution 1
