Former Owner
- Jan Six VII1
- Johannes Wigg1
- Johannes de Helb1
- Johannes zu Reitheim1
- Johem Spiess1
- John A. Murphy1
- John D. Stanitz1
- John Fletcher Hurst1
- John Read Dore1
- John Wright1
- Joseph Anton Koch1
- Karen L. Gould1
- Kartause Erfurt1
- Kloster Rebdorf1
- Librairie Tross1
- London School of Jewish Studies1
- Ludwig Rosenthal1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Celotti1
- Marienstiftsgymnasium1