Former Owner
- Ignatius Molitor1
- Imam Shamil1
- J. A. Shanley1
- James Lyell1
- James R. Herbert Boone1
- James Stevens-Cox1
- James Turle1
- Jay Gould1
- Jean-Frédéric Waldeck1
- Jo. Otho1
- Joachim Guerrinus de Montefegatesio1
- John B. Stetson Jr.1
- Joseph Anton Koch1
- Joseph Barrois1
- José Fernando Ramírez1
- Konrad von Maurer1
- Laurence Claiborne Witten II1
- Laurence Kirby1
- Leo Olschki1
- Levi, David, active 19th century1