Former Owner
- Julius Bisno1
- Libreria antiquaria Mediolanum1
- Lisa Kiser1
- London School of Jewish Studies1
- Louis Lucien Bonaparte1
- Luis Ordoñez1
- Martin Picker1
- Martin of Aragon1
- Marvin-L. Colker1
- Mayer Sulzberger1
- Michele Amari1
- Monasterio de El Paular1
- Monastery of Benevívere1
- Monica Franklyn1
- Moritz Dessauer1
- Ohio State University School of Music1
- Otto Orren Fisher1
- PBA Galleries1
- Poor Clares1
- Robert Dechert1