- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Hebrew1
- Marginalia1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Mediterranean Region1
- Meschiati, Giovanni1
- Middle Ages1
- Monasticism and religious orders--Middle Ages1
- Natural history1
- Niccola, Contro di1
- Nineteenth century1
- Ninth century1
- Numbers (Provenance)1
- Octavia, Empress, consort of Nero, Emperor of Rome, approximately 42-621
- Oedipus (Greek mythological figure)1
- Oregon--Eugene1
- Papacy1
- Pastoral theology--Catholic Church1
- Persius1
- Personal correspondence1