Former Owner
- Johann Heinrich van Ess1
- John Bolton1
- John Frederick Lewis3
- John Rolls, 1st Baron Llangattock2
- John William Burns1
- Joseph May Spetzler1
- Joseph Pope1
- Kenneth J. "Bud" Jennings1
- Laurence Claiborne Witten II2
- Leonello d'Este, Marquis of Ferrara2
- Lucien Magne1
- Léon Techener1
- Maggs Bros Ltd2
- Mayfair Rare Books and Manuscripts1
- Michel de Léon1
- Milton Fischmann2
- Paul Sabatier1
- Sam Fogg Rare Books & Manuscripts1
- San Cristoforo alla Certosa (Church : Ferrara, Italy)1
- Sokol Books Ltd.1