Former Owner
- Leicester Harmsworth1
- Linda Ehrsam Voigts1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Louis Loewe1
- Louis XII of France1
- Louis d'Harcourt1
- Lucien Delamarre1
- Lycée Louis-le-Grand1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marco da Bologna1
- Marion H. Gottfried1
- Martin Schøyen1
- Marvin-L. Colker1
- Mary W. T. Dickinson1
- Mayer Sulzberger1
- Maḥmūd bin Nāṣir1
- Meschatin La Faye family1
- Mikhail Golitsyn1
- Monasterio de El Paular1
- Monastery of Saint Peter (Erfurt, Germany)1