- Letter writing, German1
- Letter writing, Persian1
- Letter writing, Turkish1
- Letters, Papal1
- Liber sextus decretalium (Catholic Church)1
- Lion hunting1
- Lippomano, Luigi, 1500-15591
- Lists1
- Liturgical books1
- Liturgical poetry1
- Liturgies1
- Local government--Law and legislation1
- Lord's Supper--Adoration1
- Lord's Supper--Catholic Church1
- Louis XII, King of France, 1462-15151
- Low German language1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Lutheran Church1
- Lutheran Church--Controversial literature--Catholic authors1
- Machiavelli family1