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Topic
- Explorers 6
- Rivers 6
- Bodies of water 5
- Canada, Western 5
- Inland navigation 5
- Photography 3
- Discovery and exploration 2
- Boatbuilding 1
- Boats and boating 1
- Canals 1
- Cartography 1
- Dams--Surveying 1
- Discoveries in geography 1
- Eddies 1
- Hunting 1
- Maps 1
- Mosquitoes 1
- Railroad travel 1
- Railroads 1
- Rapids 1
