Former Owner
- Libreria antiquaria Mediolanum1
- Libreria la Bibliofila1
- Lorenzo Antonio da Ponte1
- Louis H. Silver1
- Louis Herbert Gray1
- Louis II, Count of Flanders1
- Lucien Magne1
- Ludwig Rosenthal's Antiquariaat1
- Luis Fernández de Córdoba y Aragón1
- Luther Albertus Brewer1
- Lydia Thompson Morris1
- Léon Gruel1
- Léon Techener1
- M. Louise Stowell1
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Manookjee Sorabjee Ashburner1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marguerite de Fontenay1
- Maria Riddell1
- Marie Ange-Toussaint Placide de Ferron1