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Subject
- Railroad tunnels.[remove]8
- Railroad trains.5
- Engineering.2
- Mountains.2
- Railroad tracks.2
- Railroad trains--United States.2
- African American men.1
- Cascade Range.1
- Cascade Tunnel (Wash.)1
- Engineers.1
- Illinois Central Railroad Company.1
- Landscapes.1
- Machinery.1
- Machines in action.1
- Motion picture journalism--History.1
- New York Central Railroad Company.1
- Railroad cars.1
- Railroad passenger cars.1
- Railroad stations.1
- Railroad travel--United States.1