- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah2
- Kings and rulers--Duties2
- Latin language--Grammar2
- Latin poetry2
- Latin poetry, Medieval and modern2
- Leather bindings2
- Linguistic analysis (Linguistics)2
- Liturgical books2
- Lollards2
- Luca, Jacopo di2
- Manners and customs2
- Manuscripts, Aramaic2
- Manuscripts, Catalan2
- Manuscripts, Dutch2
- Manuscripts, Greek (Medieval and modern)2
- Manuscripts, Oriental2
- Marginalia2
- Marriage2
- Martini, Cornelia2
- Martini, Roberto2