Spatial Coverage
- Olympic Peninsula (Wash.)1
- Olympic Peninsula.1
- Pacific Coast (Calif.)1
- Pacific Coast (Wash.)1
- Pennsylvania1
- Providence (R.I.)1
- Prussia (Germany)1
- Pungoteague Creek (Va.)1
- Red River Valley (Tex.-La.)1
- Red River Valley (Texas and Louisiana)1
- Rome (Italy)1
- Sacramento, Pampa del (Peru)1
- San Diego Bay1
- San Diego Bay (Calif.)1
- San Diego Bay.1
- San Francisco Bay Area1
- San Francisco Bay Area (Calif.)1
- Santa Barbara1
- Santa Barbara (Calif.)1
- Sonora (Calif.)1
