Former Owner
- John B. Stetson Jr.1
- John Eliot Hodgkin1
- Juan Burgueño1
- Juan de Londono1
- Judah ben Moses, ha-Rofe, ha-Kohen1
- Julian Burgueño1
- Justin MacCarthy Reagh1
- Lady Frances Bentinck1
- Laurence Claiborne Witten II1
- Libreria antiquaria Mediolanum1
- Lorenzo Berdute1
- Louis Loewe1
- Luigi Celotti1
- Luis Fernández de Córdoba y Aragón1
- Luis Ordoñez1
- Marvin-L. Colker1
- Mary W. T. Dickinson1
- Mayer Sulzberger1
- Monastery of Benevívere1
- Pedro García de Montoya1