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Subjects
- Puddling.1
- Pulp mills.1
- Pulpwood.1
- Railroad bridges.1
- Railroad ties.1
- Railroads.1
- Rare books.1
- Rolling (Metal-work)1
- San Francisco Earthquake and Fire, Calif., 1906.1
- Sawmills.1
- Saws.1
- Silent films.1
- Staves and stave trade.1
- Steamboats.1
- Technology.1
- Theater commercials (Motion pictures)1
- Trees.1
- Wages--Iron and steel workers.1
- World War, 1914-1918.1