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Creator
- Warren, George C., 1877- 6
- Rosenthal, Abraham, 1870-1929 3
Topic
- Northwest, Pacific 6
- Highway engineering 5
- Photography 5
- Bridges 2
- Mountains 2
- Riparian areas 2
- Rivers 2
- Scenic byways 2
- Tunnels 1
- Waterfalls 1
Region
- Columbia River >> Clatsop County >> Oregon >> United States 6
- Eagle Creek >> Clackamas County >> Oregon >> United States 1
- Horsetail Falls >> Multnomah County >> Oregon >> United States 1
- Multnomah Falls >> Multnomah County >> Oregon >> United States 1
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 1
License
- Creative Commons: Public Domain Mark 1.0 6
Type
- Text 5
- Collection 1