Former Owner
- L. Paganthus1
- Lambach Abbey1
- Lathrop C. Harper, Inc.1
- Laurent Campagne1
- Legoué1
- Leonhardus Cuntius1
- Lisa Norris Elkins1
- Loftus Bland1
- Louis Charles Elson1
- Louis César de La Baume Le Blanc1
- Louis-Jean-Nicolas Monmerqué1
- Ludovico Settala1
- Ludwig Rosenthal1
- Luigi Serra di Cassano1
- Madame Théophile Belin1
- Malvezzi de' Medici1
- Manuel John Johnson1
- Marcianus F. Rossi1
- Marianne F. ???1
- Martin Picker1