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Subject
- Historic buildings--Conservation and restoration12
- Historic preservation12
- Historic sites10
- Historic buildings8
- National parks and reserves6
- Signs and signboards6
- Renovation (Architecture)3
- Ruins3
- United States--History--Revolution, 1775-1783--Battlefields3
- Gravestones2
- Picnic grounds2
- Visitors' centers2
- Battlefields1
- Chimneys1
- Ice1
- Park facilities1
- Parking lots1
- Parks--Employees1
- Trails1
- Trees1