Encyclopedias, Almanacs, Transcripts, and Maps
- South American Wars of Independence (Nineteenth Century)
- South Carolina Line
- South Carolina, Flag of
- South Carolina, Mobilization in
- Southeast Asia, Japanese Occupation of
- Southern Campaigns of Nathanael Greene
- Southern Christian Leadership Conference (SCLC)
- Southern Rhodesia
- Southern Theater, Military Operations in
- Southwell, Paul
- Southwest Ordinance (1790)
- Southwestern Indians
- Souvanna Phouma
- Souvanna Phouma
- Sovereignty, Theory of
- Soviet Man
- Soviet-Finnish War
- Soviet-German Trade Agreement of 1939
- Soviet-Polish War
- Sovnarkhozy