- Jewish Rebellion (66-73 A.D.)3
- Jews--Legal status, laws, etc.3
- John, the Apostle, Saint3
- Justinian I, Emperor of the East, 483?-5653
- Kings and rulers--Genealogy3
- Latin literature--Study and teaching3
- Leaves3
- Letter writing3
- Letters patent3
- Literature, Medieval3
- Liturgy of the hours (Catholic Church)3
- Lord's prayer3
- Magi3
- Manuscripts, Dutch3
- Manuscripts, Greek (Medieval and modern)3
- Manuscripts, Provençal3
- Marriage (Roman law)3
- Martyrs3
- Massachusetts3
- Medicine--Study and teaching3