Former Owner
- Hucks Gibbs, 1st Baron Aldenham2
- Johan Meerman2
- John Eliot Hodgkin2
- John Harvey Treat2
- John Ruskin2
- Joseph Pope2
- Joseph-Félix Allard2
- Justin MacCarthy Reagh2
- Leo Olschki2
- Leonardo Lapiccirella2
- Leonello d'Este, Marquis of Ferrara2
- Libreria la Bibliofila2
- Louis César de La Baume Le Blanc2
- Louis de Gruuthuse2
- Ludwig Rosenthal's Antiquariaat2
- Martin Schøyen2
- Mary Lacaita2
- Michele Cavaleri2
- Mikhail Golitsyn2
- Morris H. Morgan2