Former Owner
- Luigi Cora1
- Luigi Serra di Cassano1
- Luther Albertus Brewer1
- Lutheran Theological Seminary at Philadelphia1
- Lydia Thompson Morris1
- Lyon Cathedral1
- Maksymilian Mielzynski1
- Marchese Porri-Carcani1
- Margaret Le Seigneur1
- Margaret of Croy1
- Marguerite of Lorraine1
- Mary Schell Collins1
- Mary Talbot, Countess of Shrewsbury1
- Matteo Luigi Canonici1
- Mercantile Library Company1
- Minnis, Katherine1
- Morot1
- Mortimer Loeb Schiff1
- Muriel Agnes Fry1
- Muḥammad Shams al-Dīn Naqshband Nūrī1