Former Owner
- Louis César de La Baume Le Blanc1
- Louis Herbert Gray1
- Louis Lamm1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Gougy1
- Ludovic Damas Froissart1
- Ludovico Settala1
- Ludwig Rosenthal1
- Luis Escobet1
- Luis Fernández de Córdoba y Aragón1
- Lundell Library1
- Luther Albertus Brewer1
- Lydia Thompson Morris1
- Lālajī Śarmaṇ1
- M. De La Tour1
- M. Louise Stowell1
- Madeleine Cosman1
- Madyājñika Devakṛṣṇa1
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Maheśa1