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Topic
- Northwest, Pacific 48
- Photography 34
- Highway engineering 19
- Scenic byways 16
- Rivers 14
- Bridges 8
- Explorers 8
- Bodies of water 5
- Roads--Design and construction 5
- Tunnels 5
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 31
- Oregon >> United States 12
- Columbia River >> Douglas County >> Washington >> United States 10
- Washington >> United States 5
- Multnomah Falls >> Multnomah County >> Oregon >> United States 3
- Oneonta Gorge >> Multnomah County >> Oregon >> United States 3
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Horsetail Falls >> Multnomah County >> Oregon >> United States 2
- British Columbia >> Canada 1
- Eagle Creek >> Clackamas County >> Oregon >> United States 1
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Format
- image/jpeg 48
Decade
- 1910-1919 48