Former Owner
- John Hope, 1st Marquess of Linlithgow1
- John Hunt1
- John Lee1
- John Patteson1
- John R. Anderson & Co1
- John Stow1
- John Taylor1
- John Thomas Beer1
- Joost Ritman1
- Julius de Cardelinis1
- Katharinenkirche, Nuremberg1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kloster Bredelar1
- Kloster Rebdorf1
- Lancino Curti1
- Laura Hurd Motion1
- Leo Olschki1
- Leo S. Olschki Editore1
- Leopold Gruber1
- Leslie, John (c. 1840), bookseller1