Spatial Coverage
- New England.1
- New Hampshire1
- New York State Canal System (N.Y.)1
- Oregon.1
- Osage County (Okla.)1
- Oshkosh Region (Wis.)1
- Ouray County (Colo.)1
- Palmer Archipelago1
- Panama Canal (Panama)1
- Pennsylvania.1
- Philippines1
- Pickens County (Ga.)1
- Piedmont (Calif.)1
- Piedmont.1
- Pitkin County (Colo.)1
- Platte County (Mo.)1
- Port Susan (Wash.)1
- Prairie County (Mont.)1
- Punjab (India)1
- Québec (Province)1
