Former Owner
- Kenneth Hyde1
- Kloster Bredelar1
- Lathrop C. Harper, Inc.1
- Laurence Claiborne Witten II1
- Laurence Kirby1
- Laurence William Hodson1
- Laurentius van der Torqel1
- Leonard Grey, 1st Viscount Grane1
- Leonardo Lapiccirella1
- Libreria la Bibliofila1
- Libri, Edoardo, active 20th century1
- Louis César de La Baume Le Blanc1
- Lucien Magne1
- Luigi Celotti1
- Luigi Clerici1
- Luis Mayora1
- Margaret of Croy1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Marie Cleophe de Sollario1