Former Owner
- Leopold Gruber1
- Libreria antiquaria Mediolanum1
- Libreria la Bibliofila1
- Lisa Norris Elkins1
- Loftus Bland1
- Lorenzo de Olivera1
- Louis-Jean-Nicolas Monmerqué1
- Ludwig Rosenthal1
- Luigi Serra di Cassano1
- Madeleine Cosman1
- Malvezzi de' Medici1
- Manoel S. Pinto1
- Manuel Fernández del Castillo1
- Marilyn Carbonell1
- Mark Augspürger1
- Mark Lansburgh1
- Markus Fugger1
- Marsden J. Perry1
- Martin Picker1
- Mary Augusta Strachey1