- Spain. Comisaría General de Cruzada1
- Spanish drama1
- Spanish poetry1
- Spiritual life--Catholic Church1
- Strozzi, Nanni, 1376-14271
- Süleyman I, Sultan of the Turks, 1494 or 1495-15661
- Tasʹhīl al-fawāʼid wa-takmīl al-maqāṣid (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)1
- Textile industry1
- Texts1
- Theology, Doctrinal--Middle Ages1
- Thirty Years' War (1618-1648)1
- Tides1
- Translations1
- Trials, litigation, etc.1
- Turkey1
- Turkish Wars (Venice, Italy : 1453-1571)1
- Uguccioni, Benedetto1
- Uguccioni, Carlo1
- Universidad de Salamanca1
- Universidad de Zaragoza1