Former Owner
- Ludwig Rosenthal's Antiquariaat2
- Luigi Arrigoni2
- Luigi Celotti10
- Luigi Clerici1
- Luigi Serra di Cassano1
- Luis Mayora1
- 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
- Magby, H1
- Maggs Bros Ltd36