- Rendón y Sarmiento family1
- Requesens, Antonio de'1
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- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Revolutions1
- Rodriguez, Ysabel1
- Rodríguez, Sebastián, 1896-19681
- Romances, Spanish1
- Salt industry and trade--Law and legislation1
- Sancho Garcés I, King of Navarre, -9251
- Sancho II, King of Castile and Leon, 1037 or 1038-10721
- Sarmiento, Pero. Sentencia-Estatuto1
- Satire1
- Satires1
- Sea fiction1
- Sea stories, Spanish1
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- Sepúlveda, Juan Ginés de, 1490-15731
- Sermons1