Former Owner
- Leonello d'Este, Marquis of Ferrara2
- Librairie Tross1
- Lionel Tollemache, 4th Earl of Dysart1
- Lodovicus Saltariellus1
- London School of Jewish Studies2
- Long Island Historical Society, Maine1
- Louis Bourguet1
- Louis César de La Baume Le Blanc3
- Louis Thompson Rowe1
- Louis XII of France1
- Louis XIV of France1
- Louis de Gruuthuse1
- Lucien Gougy2
- Lucien Graux1
- Lucy Evans Chew2
- Luigi Cora1
- Lydia Thompson Morris2
- M. De La Tour1
- Mademoiselle de Malberghe1
- Maggs Bros Ltd2