Subject
- Ice breaking operations.1
- Icebergs.1
- Icebreakers (Ships)1
- Industries.1
- International Ice Patrol.1
- Lakes.1
- Landscapes.1
- Lumbermen.1
- Mountains.1
- Navigation--Safety measures.1
- Old growth forests.1
- Political science--Canada.1
- Railroad tracks.1
- Railroad trains--United States.1
- Railroad travel--United States.1
- Rivers.1
- Ships--Brazing.1
- Ships--Maintenance and repair.1
- Ships--Reconstruction.1
- Showgirls.1