- Latin language--Etymology1
- Latin poetry1
- Law (Theology)1
- Leaves1
- Legal documents1
- Legal formularies1
- Leicester, Robert Dudley, Earl of, 1532?-15881
- Letters patent1
- Love poetry, English (Middle)1
- Lydgate, John, 1370?-1451?1
- Magna Carta1
- Majolus, Saint, Abbot of Cluny, approximately 906-9941
- Manichaeism1
- Marina, Saint1
- Massachusetts--Williamstown1
- Materia medica, Vegetable1
- Mathematics1
- Missals (Service books)1
- Monasticism and religious orders1
- Monasticism and religious orders--Rules1