Former Owner
- Marco da Bologna1
- Marion H. Gottfried1
- Martin Schøyen1
- Marvin-L. Colker1
- Mary W. T. Dickinson1
- Maḥmūd bin Nāṣir1
- Meschatin La Faye family1
- Mikhail Golitsyn1
- Monasterio de El Paular1
- Monastery of Saint Peter (Erfurt, Germany)1
- Mount Zion Abbey1
- Mrs. F. W. Bartlett1
- Muḥammad Nāṣir al-Dawlah1
- Muḥammad al-Raʼīs1
- Muḥammad ʻAbd al-Ḥayy ibn ʻAbd al-Kabīr al-Kinānī al-Ḥasanī1
- Muḥammad Ṣābir1
- Muṣṭafá Shāh ʻAlāʼī1
- Nathaniel Dunbar1
- Otto Vollbehr1
- Paul Riant1