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Subject
- Description and travel62
- Travel53
- History27
- Mountaineering25
- Hiking19
- Frontier and pioneer life9
- Natural areas9
- Natural history9
- Outdoor recreation9
- Mountains8
- Trails8
- Discovery and exploration6
- National parks and reserves6
- Discoveries in geography5
- Pioneers4
- Walking4
- Families3
- Manners and customs3
- Mountain life3
- Mountaineers3