Spatial Coverage
- Mark Twain National Forest (Mo.)2
- Maryland2
- Mexico2
- Michigan2
- Minnesota2
- Mississippi River Valley.2
- Monterey County2
- Mount Desert Island (Me.)2
- New Jersey2
- Newfoundland and Labrador2
- Northwest Territories2
- Ohio2
- Pacific Area2
- Persian Gulf2
- Persian Gulf.2
- Philippines2
- Powder River County2
- Puerto Rico2
- Putnam County2
- Québec (Province)2
