Former Owner
- Johann Heinrich von Speyr-Passavant1
- Johem Spiess1
- John B. Stetson Jr.1
- John Bohn1
- John Egylsfelld1
- John Fenn1
- John Hindley1
- John Lumley, 1st Baron Lumley1
- John Sidney Hawkins1
- John Taylor1
- John Topham1
- Joseph Barrois1
- Joseph Haslewood1
- Joseph Mayner1
- Joseph Pulilo1
- José Antonio Conde1
- Julia Burgess1
- Lepeletier de Rosanbo1
- Lew David Feldman1
- Librairie Tross1