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Topic
- Canyons 15
- Rivers--Oregon 11
- Railroad tracks 3
- Formations (Geology) 2
- Bridges 1
- Footbridges 1
- Forests and forestry 1
- Railroad bridges 1
- Roads 1
- Tunnels 1
Region
- Cow Creek Gorge (United States >> Oregon) 3
- Crooked River >> Jefferson County >> Oregon >> United States 3
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 2
- Canyon Creek >> Linn County >> Oregon >> United States 1
- Cascadia >> Linn County >> Oregon >> United States 1
- Columbia River >> Clatsop County >> Oregon >> United States 1
- Deschutes River >> Sherman County >> Oregon >> United States 1
- Douglas County >> Oregon >> United States 1
- Lake County >> Oregon >> United States 1
- Oneonta Creek >> Multnomah County >> Oregon >> United States 1
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Format
- image/tiff 15
Institution
- Oregon State University 15
Decade
- 1910-1919 15