Former Owner
- Legoué1
- Leo Olschki1
- Leonhardus Cuntius1
- Lisa Norris Elkins1
- Lorenzo Berdute1
- Louis César de La Baume Le Blanc2
- Louis Hercule Timoléon de Cossé-Brissac1
- Louis XIV of France1
- Lucien Gougy1
- Luigi Celotti1
- Luigi Serra di Cassano1
- Luis Escobet1
- Luis Ordoñez1
- Lutheran Theological Seminary at Philadelphia1
- Madame Théophile Belin1
- Madyan Qusuni1
- Maggs Bros Ltd2
- Manoel Pereira da Sylva1
- Manuel Fernández del Castillo1
- Manuel John Johnson1