Former Owner
- Irvine Masson1
- J. & J. Leighton1
- James F. Drake1
- James Stevens-Cox1
- Johann Heinrich van Ess1
- Johannes Lethe1
- John Dozier Gordan1
- John Leeche1
- John William Harshberger1
- Joseph Barrois1
- Josiah H. Benton1
- Kloster Rebdorf1
- Lane Theological Seminary1
- Leo Olschki1
- Librairie Tross1
- Llanthony Priory1
- Louis H. Silver1
- Louis Lucien Bonaparte1
- Ludwig Rosenthal1
- Magby, H1