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Topic
- Dams 50
- Rivers--Oregon 43
- Salmon 24
- Flood control 17
- Fishes--Conservation 16
- Lectures and lecturing 14
- Inland water transportation 7
- Fishways 4
- Water--Pollution 4
- Irrigation 3
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 30
- Columbia River >> Clatsop County >> Oregon >> United States 19
- Bonneville Dam >> Multnomah County >> Oregon >> United States 7
- Santiam River >> Marion County >> Oregon >> United States 7
- McKenzie River >> Lane County >> Oregon >> United States 3
- Grand Coulee Dam >> Okanogan County >> Washington >> United States 2
- Sweet Home >> Linn County >> Oregon >> United States 2
- Alaska >> United States 1
- Malheur National Wildlife Refuge >> Harney County >> Oregon >> United States 1
- Portland >> Washington County >> Oregon >> United States 1
Collection
- OSU Special Collections & Archives Research Center 50
- Reuniting Finley and Bohlman 50
