- Romances, Spanish1
- Ros Pelayre, Miguel1
- Rufina, Saint, -approximately 2871
- Sales (Islamic law)1
- Sancho Garcés I, King of Navarre, -9251
- Sancho IV, King of Castile and Leon, 1257-12951
- Satellites--Phases1
- Science1
- Seals, wax1
- Sententiarum libri IV (Peter Lombard, Bishop of Paris)1
- Sephardim1
- Sepúlveda, Juan Ginés de, 1490-15731
- Sermons1
- Sermons, Latin1
- Service books (Music)--Catholic Church1
- Shavuot sermons1
- Shipwrecks1
- Sigismund II Augustus, King of Poland, 1520-15721
- Silver clasp plates1
- Spain--Andalusia1