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Spatial Coverage
- Virginia3
- Alaska2
- Arizona2
- California2
- Great Smoky Mountains National Park (N.C. and Tenn.)2
- Idaho2
- Maryland2
- Missouri2
- Shannon County2
- Washington (State)2
- Arctic Regions.1
- Arctic regions1
- Cades Cove1
- California, Northern1
- California, Northern.1
- Cascade Range1
- Charles County1
- Chesapeake and Ohio Canal National Historical Park1
- Colorado1
- Frederick County1
