- Local history--Sources1
- Local officials and employees7
- Local officials and employees--Salaries, etc.3
- Locusts1
- Logarithms1
- Logic495
- Logic, Ancient1
- Logic, Medieval22
- Lollards3
- Lombards1
- Longevity--Religious aspects--Islam1
- Lopez Bulhão, Antonio, active 1510-15151
- Lord's Supper6
- Lord's Supper--Adoration2
- Lord's Supper--Catholic Church2
- Lord's Supper--Catholic Church--History of doctrines1
- Lord's prayer4
- Loredano, Leonardo, doge of Venice, 1438-15212
- Lorenzo, Betto di1
- Lorenzo, Giovanni Battista di1