Former Owner
- Libreria la Bibliofila1
- Liechtenstein State Library1
- Lionardo di Paolo Adimari1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Loftus Bland1
- Lorenzo de Olivera1
- Louis Herbert Gray1
- Luigi Clerici1
- Luigi Cora1
- Luigi Serra di Cassano1
- Luis Mayora1
- Luther Albertus Brewer1
- Lyon Cathedral1
- M. Favia del Core1
- M. Haimmiller1
- Madeleine Cosman1
- Magby, H1
- Malachia Ormanian1
- Manoel S. Pinto1