Former Owner
- Luis Ordoñez1
- Luther Albertus Brewer1
- Lutheran Theological Seminary at Philadelphia1
- Lydia Thompson Morris3
- Léon Gruel1
- M. De La Tour1
- M. Louise Stowell1
- Madame Théophile Belin1
- Maggs Bros Ltd26
- Maksymilian Mielzynski1
- Manuel John Johnson1
- Manṣūr, Abū al-Faz̤l ibn Ghiyāth al-Dīn1
- Marc-René de Voyer d'Argenson1
- Marcantonio Contarini1
- Marcela Gabriela1
- Marco da Bologna1
- Margaret F. Woodward1
- Margaret Le Seigneur1
- Marguerite de Fontenay1
- Marguerite of Lorraine1