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Creator
- Oregon Journal (Firm) 32
- Oregonian (Firm) 23
- Oregon City Enterprise Courier (Oregon City, Or.) 3
- Izaak Walton League of America 2
- Portland Chamber of Commerce (Or.) 2
- Averill, Edgar F., 1881-1955 1
- Billings Gazette 1
- Burns Times-Herald 1
- Finley, William L. (William Lovell), 1876-1953 1
- Grants Pass Daily Courier 1
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Topic
- Water--Pollution 32
- Rivers--Oregon 29
- Lectures and lecturing 11
- Fishes--Conservation 6
- Sewage disposal plants 6
- Izaak Walton League of America 5
- Dams 4
- Salmon 4
- Conservation--Law and legislation 3
- Fishing 3
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 20
- Columbia River >> Clatsop County >> Oregon >> United States 6
- Portland >> Washington County >> Oregon >> United States 6
- Alaska >> United States 2
- Rogue River >> Curry County >> Oregon >> United States 2
- Corvallis >> Benton County >> Oregon >> United States 1
- Malheur National Wildlife Refuge >> Harney County >> Oregon >> United States 1
- P Ranch >> Harney County >> Oregon >> United States 1
- Santiam River >> Marion County >> Oregon >> United States 1
- Tillamook >> Tillamook County >> Oregon >> United States 1
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Institution
- Oregon State University 32