Former Owner
- J. Meade Falkner1
- Jacob Henry Burn1
- Johann Heinrich von Speyr-Passavant1
- Johann Michael Schiller1
- Johem Spiess1
- John Cochran1
- John D. Stanitz1
- John Edgar Ker1
- John Egylsfelld1
- John Taylor1
- John Topham1
- Joseph Haslewood1
- Joseph Mayner1
- Juan de Iriarte y Cisneros1
- Lew David Feldman1
- Librairie Tross1
- Lorenzo Antonio da Ponte1
- Louis César de La Baume Le Blanc1
- Louis H. Silver1
- Marquis of Astorga1