Spatial Coverage
- Saint Lawrence River1
- Saint Lawrence River Valley1
- Saint Lawrence River Valley.1
- Saint Lawrence River.1
- San Francisco (Calif.)1
- San Francisco.1
- Saskatchewan1
- Saskatchewan.1
- Seattle (Wash.)1
- Seattle.1
- South Dakota1
- South Dakota.1
- Southern States1
- Southern States.1
- Southwest, New1
- Soviet Union1
- Soviet Union.1
- Sunbelt States1
- Sunbelt States.1
- Tehuantepec1
