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Spatial Coverage
- Colorado2
- Michigan2
- Alaska1
- Arizona1
- Catron County1
- Chesapeake and Ohio Canal National Historical Park1
- Coconino County1
- Coconino County.1
- Colorado National Monument1
- Colorado National Monument (Colo.)1
- Colorado National Monument.1
- Death Valley (Calif. and Nev.)1
- Gogebic County1
- Grand Canyon1
- Grand Canyon (Ariz.)1
- Grand Canyon National Park1
- Grand Canyon National Park (Ariz.)1
- Grand Canyon National Park.1
- Grand Canyon.1
- Keweenaw Peninsula1
