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Topic
- Bodies of water 16
- Rivers 16
- Northwest, Pacific 15
- Photography 15
- Riparian areas 10
- Mountains 7
- Formations (Geology) 5
- Postcards 4
- Rapids 3
- River surveys 3
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Region
- Washington >> United States 18
- Columbia River >> Douglas County >> Washington >> United States 17
- Oregon >> United States 8
- Cape Horn >> Skamania County >> Washington >> United States 3
- California >> United States 2
- Maine >> United States 2
- Penobscot River >> Hancock County >> Maine >> United States 2
- Willamette River >> Multnomah County >> Oregon >> United States 2
- Castle Rock >> Malheur County >> Oregon >> United States 1
- Kennebec River >> Sagadahoc County >> Maine >> United States 1
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Decade
- 1860-1869 18