Former Owner
- Luigi Arrigoni1
- Maggs Bros Ltd1
- Maksymilian Mielzynski1
- Mannheimer Hofbibliothek1
- Marchese Linterno1
- Marie-François Duchesne de Beaumanoir1
- Mary W. T. Dickinson1
- Maḥmūd al-Ustādār, d. 1396 or 71
- Michael Tomkinson1
- Morton Davis Mitchell1
- Nathaniel Dunbar1
- Oliver R. Barrett1
- Park Abbey1
- Percy Mordaunt Barnard1
- Phyllis Walter Goodhart Gordan1
- Preston A. Perry1
- Prince Sadruddin Aga Khan1
- Richard Hooker1
- Robert Brodhead Honeyman1
- Ross Winans1