Former Owner
- James Rimell & Son1
- James Stevens-Cox1
- Jan Six VII1
- Jean-Jacques Charron1
- Jeremy C. Jackson1
- Joachim Guerrinus de Montefegatesio1
- Joannes Aloysius Brochman1
- Johann Heinrich van Ess1
- Johannes Vivianus1
- Johannes Wigg1
- John Josias Conybeare1
- John Milne Buckie1
- John Stanley, 18th Earl of Derby1
- Jérôme Bignon1
- K. B. Starkie1
- Katherine Petersen1
- Katherine Somerset Wyttenbach Fenwick1
- Lathrop C. Harper, Inc.1
- Laurence Claiborne Witten II1
- Laurence Vaux1