Former Owner
- Lydia Thompson Morris2
- Lyon Cathedral1
- Léon Gruel1
- Léon Techener1
- L’Art Ancien1
- M. Haimmiller1
- M. Lee1
- M. Pierre Guarin1
- Maffeo Pinelli1
- Magby, H1
- Maggs Bros Ltd40
- Maksymilian Mielzynski1
- Mannheimer Hofbibliothek1
- Mannucci family1
- Manoel S. Pinto1
- Mantell1
- Manuel John Johnson1
- Marc-René de Voyer d'Argenson1
- Marcantonio Contarini1
- Marcantonio V Borghese1