- Real property1
- Reformation1
- Requesens, Antonio de'1
- Requesens, Berengario de'1
- Requesens, Bernardo de'1
- Requesens, Giuseppe de'1
- Sea-power1
- Siege of Istanbul (Istanbul, Turkey : 1453)1
- Sigismund II Augustus, King of Poland, 1520-15721
- Sources1
- Spain--Aragon1
- Spain--Huesca1
- Spain--Jerez de la Frontera1
- Spain--Seo de Urgel1
- Spain--Seville1
- Spain--Tarazona de Aragón1
- Speeches, addresses, etc., Latin1
- Switzerland1
- Süleyman I, Sultan of the Turks, 1494 or 1495-15661
- Tasʹhīl al-fawāʼid wa-takmīl al-maqāṣid (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)1