Former Owner
- Julian Burgueño1
- Kloster Rebdorf1
- Lambach Abbey1
- Lathrop Colgate Harper1
- Laurence William Hodson1
- Lionel Tollemache, 4th Earl of Dysart1
- Louis César de La Baume Le Blanc1
- Louis N. Cassett1
- Lucien Gougy1
- Lyon Cathedral1
- M. Haimmiller1
- Maggs Bros Ltd1
- Mario Maffei1
- Mary Schell Collins1
- Matteo Luigi Canonici1
- Mayer Sulzberger1
- Melk Abbey1
- Michel Chasles1
- Michel de Léon1
- Moritz Dessauer1