Former Owner
- Karl F. Morrison1
- Katherine Somerset Wyttenbach Fenwick1
- Lawrence J. Schoenberg1
- LeMare1
- Leicester Harmsworth1
- Leo Olschki1
- Lepeletier de Rosanbo1
- Library of the Dominicans of Paris1
- Linda Ehrsam Voigts1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Luigi Celotti1
- M. Haimmiller1
- Magby, H1
- Marcel Mirgodin1
- Marvin-L. Colker1
- Michael Greenberg1
- Monastery of Benevívere1
- Monastery of San Bartolmeo, Arezzo, Tuscany1
- Nathaniel Castleton Stephen Poyntz1
- Nathaniel G. Snelling1