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Creator
- Oregon Journal (Firm) 13
- Oregonian (Firm) 8
- Oregon City Enterprise Courier (Oregon City, Or.) 6
- Statesman Journal 5
- The Daily Astorian 5
- The Register-Guard 4
- East Oregonian Publishing Co. 2
- Finley, William L. (William Lovell), 1876-1953 2
- Independence Enterprise (Independence, Or.) 2
- Izaak Walton League of America 2
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Topic
- Flood control 32
- Dams 28
- Rivers--Oregon 28
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- Salmon 11
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- Water--Pollution 3
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 28
- Santiam River >> Marion County >> Oregon >> United States 8
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- McKenzie River >> Lane County >> Oregon >> United States 6
- Mexico >> North America 2
- Portland >> Washington County >> Oregon >> United States 2
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Decade
- 1940-1949 32
