Former Owner
- Ludwig Rosenthal's Antiquariaat2
- Luigi Celotti3
- 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
- Madyan Qusuni2
- Madyājñika Devakṛṣṇa1
- Maggs Bros Ltd6
- Mahadevabhaṭṭa5
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Maheśa1
- Mahārāja Aditya Bahadur Dinha8
- Malachia Ormanian1
- Malvezzi de' Medici1