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- Bridges, 6 results
- Railroad tracks, 4 results
- black-and-white prints (photographs), 4 results
- Railroad facilities, 4 results
- Oregon Railway and Navigation Company, 2 results
- Columbia River, 2 results
- Oregon Steam Navigation Company, 2 results
- stereographs, 2 results
- Frontier and pioneer life--Oregon, 1 results
- mammoth plate, 1 results