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Subject
- Trails[remove]54
- National parks and reserves11
- National Trails System8
- Government purchasing of real property5
- Historic sites4
- Outdoor recreation4
- United States. Department of the Interior4
- Legal status3
- Local government3
- National Historic Trails Interpretive Center (Casper, Wyo.)3
- Recreation areas3
- Volunteer workers in forestry3
- Volunteer workers in recreation3
- Cities and towns2
- Public lands2
- Federal aid to recreation1
- Federal government1
- Lighthouses1
- Natural history1
- Nature trails1