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Spatial Coverage
- Vermont3
- Windsor County2
- Addison County1
- Atlantic Ocean1
- Champaign County1
- Clark County1
- Colorado1
- Colorado National Monument1
- Colorado National Monument (Colo.)1
- Colorado National Monument.1
- Cumberland County1
- Dugway Proving Ground Region1
- Keweenaw Peninsula1
- Keweenaw Peninsula.1
- Long Island Sound (N.Y. and Conn.)1
- Long Island Sound.1
- Michigan1
- North Carolina1
- Ohio1
- Rutland County1
