Spatial Coverage
- Hartford County2
- Massachusetts2
- McKinley County2
- New Brunswick2
- North Carolina2
- North Dakota2
- Northwest Territories2
- Prince Edward Island2
- Russia2
- Saudi Arabia2
- Soviet Union2
- West (U.S.)2
- West Virginia2
- Zion National Park (Utah)2
- Zion National Park.2
- Acadia National Park (Me.)1
- Acadia National Park.1
- Açores (Portugal)1
- Admiralty Island1
- Africa1
