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Topic
- Dams 32
- Rivers--Oregon 25
- Log transportation 5
- Lumber trade 5
- Bridges 3
- Dams--Design and construction 2
- Fishways 2
- Power-plants 2
- Reservoirs 2
- Formations (Geology) 1
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Region
- Clackamas River >> Clackamas County >> Oregon >> United States 5
- Detroit Dam >> Marion County >> Oregon >> United States 4
- Mill Creek >> Douglas County >> Oregon >> United States 4
- Umpqua River >> Douglas County >> Oregon >> United States 4
- Oregon >> United States 3
- Rogue River >> Curry County >> Oregon >> United States 3
- Cazadero (historical) >> Clackamas County >> Oregon >> United States 2
- Cazadero Dam >> Clackamas County >> Oregon >> United States 2
- Estacada >> Clackamas County >> Oregon >> United States 2
- Lookout Point Dam (United States >> Oregon) 2
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Format
- image/tiff 32
Collection
- Gerald W. Williams Collection 32
- OSU Special Collections & Archives Research Center 32
- Oregon Explorer 16
- Frank Patterson Photographs 2
