- Jesus Christ1
- Jewish physicians1
- Jews--Legal status, laws, etc.1
- Jiří, z Poděbrad, King of Bohemia, 1420-14711
- Julius III, Pope, 1487-15551
- Kings and rulers--Duties1
- Land tenure1
- Land titles--Registration and transfer1
- Language and languages1
- Latin letters, Medieval and modern1
- Law, Medieval1
- Lawyers1
- Learning and scholarship1
- Ledger bindings1
- Legal instruments1
- Leo XI, Pope, 1535-16051
- Letter writing1
- Ludovico Sforza, Duke of Milan, 1452-15081
- Machiavelli family1
- Mancini, Girolamo, 1832-19241