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Topic
- Rivers 27
- Bodies of water 26
- Northwest, Pacific 19
- River engineering 14
- River surveys 14
- United States. Congress--Records and correspondence 14
- River channels 13
- Harbors 11
- Photography 11
- Riparian areas 9
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Region
- Washington >> United States 27
- Columbia River >> Douglas County >> Washington >> United States 25
- Oregon >> United States 21
- Snake River >> Franklin County >> Washington >> United States 14
- Willamette River >> Multnomah County >> Oregon >> United States 14
- Coos Bay >> Coos County >> Oregon >> United States 11
- Clearwater River >> Nez Perce County >> Idaho >> United States 5
- Idaho >> United States 5
- California >> United States 4
- Cowlitz River >> Cowlitz County >> Washington >> United States 4
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Format
- application/pdf 14
- image/tiff 12
- image/jpeg 1
Decade
- 1880-1889 27