Title
- Snaith inquest record1
- Soliloquies1
- Somnium viridarii1
- Sonectorum et cantilenarum liber; Triumphorum liber ... [etc.1
- Song of Solomon1
- Speculum Beatae Mariae Virginis1
- Speculum Christiani1
- Speculum anime1
- Speeches1
- Splendor paternae gloriae1
- Sportula fragmentorum1
- Statements from the Council of Basel1
- Stations of Rome1
- Stimulus amoris1
- Stratēgikos1
- Streeter-Piccard Hours1
- Summa1
- Summa chiromantia1
- Summa confessionis1
- Summa contra gentiles1