Former Owner
- Lancino Curti1
- Leo Olschki1
- Leonard S. Unger1
- Leonhardus Cuntius1
- Leopold Gruber1
- Levi, David, active 19th century1
- Lionardo di Paolo Adimari1
- Lohanī, Viṣṇudatta1
- Louis Lamm1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Gougy1
- Ludovic Damas Froissart1
- Ludovico Settala1
- Luigi Celotti1
- Luis Fernández de Córdoba y Aragón1
- Lālajī Śarmaṇ1
- Madeleine Cosman1
- Madyājñika Devakṛṣṇa1
- Maheśa1
- Malachia Ormanian1