Spatial Coverage
- Alaska1
- Alaska Peninsula (Alaska)1
- Albania1
- Alberta1
- Aleutian Range (Alaska)1
- Aniakchak National Monument and Preserve (Alaska)1
- Aniakchak Peak (Alaska)1
- Arizona1
- Arkansas1
- Ashland County (Wis.)1
- Atacama (Chile)1
- Atacama (Region)1
- Australia1
- Bayfield County (Wis.)1
- Berlin (Germany)1
- Bermuda Islands1
- Bermuda Islands.1
- Blanc, Mont (France and Italy)1
- Bland County (Va.)1
- Boonton1
