Former Owner
- Lyon Cathedral1
- Léon Gruel1
- Léon Techener1
- L’Art Ancien1
- M. Haimmiller1
- M. Lee1
- M. Pierre Guarin1
- Madame Théophile Belin1
- Mademoiselle de Malberghe1
- Maffeo Pinelli1
- Magby, H1
- Maggs Bros Ltd36
- Maksymilian Mielzynski1
- Malvezzi de' Medici1
- Mannheimer Hofbibliothek1
- Mannucci family1
- Manuel Fernández del Castillo3
- Manuel John Johnson1
- Marcantonio Contarini1
- Marcantonio V Borghese1