Title
- Nuremberg Chronicle1
- Nuskhat al-sijill alladhī wujida muʻallaqan ʻalá al-mashāhid fī ghaybat Mawlānā al-Imām al-Ḥākim1
- Observationes1
- Occasional services1
- Oedipi et sphingis dialogus1
- Office for profession of female Benedictine novices : in Latin with German rubrics].1
- Office of the Dead1
- Offices1
- Officii et magistrati1
- Old Testament1
- Omnes ad praeda venient1
- On Jews living in Rome1
- On accounting and commissions1
- On generation and corruption1
- On mnemonics and memory1
- Opuscula1
- Opusculum de formandis epistolis1
- Or ha-sekhel and Sefer ha-Shem1
- Oraisons et confessions1
- Oratio ad immortalitatem illustriassimae nec non famigerratissimae laudis1