Former Owner
- Luigi Arrigoni1
- Luigi Celotti10
- Luigi Serra di Cassano1
- Lundell Library1
- Lycée Louis-le-Grand1
- Lydia Thompson Morris1
- Lyon Cathedral1
- Léon Gruel1
- Léon Techener1
- L’Art Ancien1
- M. Haimmiller1
- M. Lee1
- M. Pierre Guarin1
- Mademoiselle de Malberghe1
- Maffeo Pinelli1
- Maggs Bros Ltd35
- Maksymilian Mielzynski1
- Malvezzi de' Medici1
- Mannheimer Hofbibliothek1
- Mannucci family1