Former Owner
- Leopold Gruber1
- Leslie, John (c. 1840), bookseller1
- Lew David Feldman1
- Librairie Tross1
- Lionardo di Paolo Adimari1
- Lohanī, Viṣṇudatta1
- Lorenzo Antonio da Ponte1
- Louis Charles Karpinski1
- Louis César de La Baume Le Blanc1
- Louis Herbert Gray1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Gougy1
- Ludwig Rosenthal1
- Luther Albertus Brewer1
- Lydia Thompson Morris1
- M. De La Tour1
- M. Louise Stowell1
- Madeleine Cosman1
- Madyan Qusuni1
- Madyājñika Devakṛṣṇa1