Former Owner
- Johem Spiess1
- John A. Murphy1
- John Fletcher Hurst1
- John Harvey Treat1
- John Henry Ellis1
- John Hinsdale Scheide1
- John Read Dore1
- John Singer Sargent1
- John Wright1
- Jonathan Peckover1
- Joseph Anton Koch1
- Joseph Görres1
- Jérôme Bignon1
- Kloster Bredelar1
- Kulturhistorisches Museum Magdeburg1
- Lathrop Colgate Harper1
- Laurence Claiborne Witten II1
- Laurence William Hodson1
- Leicester Harmsworth1
- Librairie Tross1