Spatial Coverage
- Lower Saxony (Germany)1
- Lübeck (Germany)1
- Maine.1
- Manhattan (New York, N.Y.)1
- Marshall (Pa. : Township)1
- Marshall (Township)1
- Martinez (Calif.)1
- Maryland1
- Mesa Verde National Park (Colo.)1
- Middle West1
- Middle West.1
- Mineral County (Colo.)1
- Montenegro1
- Monterey County (Calif.)1
- Moose Pass (Alaska)1
- Mount Baker Region.1
- Mount Baker.1
- Nebraska.1
- New Hampshire1
- New Mexico.1
