Former Owner
- Louis Lucien Bonaparte1
- Louis XII of France1
- Louis d'Harcourt1
- Lucien Delamarre1
- Luigi Celotti2
- Lycée Louis-le-Grand1
- Léon Techener1
- M. Lee1
- M. Pierre Guarin1
- Maggs Bros Ltd8
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marco da Bologna1
- Marie-François Duchesne de Beaumanoir1
- Marion H. Gottfried1
- Martin Picker2
- Martin Schøyen2
- Martin of Aragon1
- Marvin-L. Colker1
- Mary W. T. Dickinson1
- Matteo Luigi Canonici2