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Creator
- United States. Congress. House 2
- United States. War Department 2
Topic
- Bodies of water 2
- Harbors 2
- Rapids 2
- River engineering 2
- River surveys 2
- Rivers 2
- United States. Congress--Records and correspondence 2
- West (U.S.) 2
Region
- California >> United States 2
- Columbia River >> Douglas County >> Washington >> United States 2
- Maine >> United States 2
- Oregon >> United States 2
- Penobscot River >> Hancock County >> Maine >> United States 2
- Washington >> United States 2
- Willamette River >> Multnomah County >> Oregon >> United States 2
- Kennebec River >> Sagadahoc County >> Maine >> United States 1
- Saint Croix River >> Washington County >> Maine >> United States 1
- San Diego River >> San Diego County >> California >> United States 1
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License
- Creative Commons: Public Domain Mark 1.0 2