Former Owner
- Lawrence J. Schoenberg2
- Leonello d'Este, Marquis of Ferrara1
- Lorenzo de Olivera1
- Louis Charles Elson1
- Louis H. Silver3
- Louis N. Cassett1
- Ludwig Rosenthal's Antiquariaat2
- Luigi Serra di Cassano1
- Lyon Cathedral1
- Maggs Bros Ltd1
- Manookjee Sorabjee Ashburner1
- Manuel Fernández del Castillo3
- Margaret of Croy1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marino Grimani1
- Mark Lansburgh1
- Mayer Sulzberger1
- McCormick Theological Seminary1
- Michel de Léon1
- Milton Fischmann5