Former Owner
- Lathrop Colgate Harper1
- Laurence William Hodson1
- Laurent Campagne1
- LeMare1
- Legoué1
- Lepeletier de Rosanbo1
- Library of the Dominicans of Paris1
- Lisa Norris Elkins1
- Loftus Bland1
- Long Island Historical Society, Maine1
- Louis II, Count of Flanders1
- Louis XII of France1
- Louis XIV of France1
- Lucien Delamarre1
- Lycée Louis-le-Grand1
- Lydia Thompson Morris1
- Léon Gruel1
- Léon Techener1
- Maksymilian Mielzynski1
- Marco da Bologna1