- Italy--Padua1
- Italy--Pistoia1
- Italy--Prato1
- Italy--Siena1
- Jesuits1
- John IV, King of Portugal, 1604-16561
- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- Juana, of Austria, Princess of Portugal, 1535-15731
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Lamucci, Corso1
- Law1
- Leather bindings1
- Legal instruments1
- Liturgical books1
- Liturgics1
- Logic1
- Lorraine, Nicolas-François, duc de, 1609-16701
- Manuel I, King of Portugal, 1469-15211
- Manuele, Luigi1