- Angeli, Niccolò, 1448-1
- Angeri, Ambrogio1
- Animals1
- Animals--Religious aspects1
- Annals and chronicles3
- Anne (Mother of the Virgin Mary), Saint2
- Annotations20
- Annotations (Provenance)1
- Annunciation to the Blessed Virgin Mary1
- Antella, Francesco dell'1
- Anthony, of Egypt, Saint, approximately 250-355 or 3562
- Anthony, of Padua, Saint, 1195-12314
- Anthony, of Padua, Saint, 1195-1231--Prayers and devotions1
- Anthropomorphic initials1
- Antichrist2
- Antiphonaries166
- Antiphonaries (Service books)14
- Antiphons (Music)1
- Antiquities2
- Antoni, Jacopo1