Former Owner
- Johannes Lethe1
- John D. Stanitz1
- John Dozier Gordan1
- John Frederick Lewis10
- John Leeche1
- John William Harshberger1
- Joseph Barrois1
- Josiah H. Benton1
- Karl Theodor Völcker's Verlag Und Antiquariat3
- Kloster Rebdorf1
- Lane Theological Seminary1
- Lawrence J. Schoenberg18
- Leo Olschki1
- Librairie Tross1
- Llanthony Priory1
- Louis H. Silver1
- Louis Lucien Bonaparte1
- Ludwig Rosenthal1
- Magby, H1
- Marvin-L. Colker1