Former Owner
- John Morley1
- John Stanley, 18th Earl of Derby1
- Joseph E. Widener1
- Josephine Widener Wichfield1
- José Antonio Conde1
- Kloster Rebdorf1
- Lane Theological Seminary1
- Lathrop C. Harper, Inc.1
- Leicester Harmsworth1
- Luigi Celotti1
- Léon Gruel1
- Mannheimer Hofbibliothek1
- Marvin-L. Colker1
- Mary Lacaita1
- Mary Stanley, Countess of Derby1
- Mary W. T. Dickinson1
- Mikhail Golitsyn1
- Monasterio de El Paular1
- Mrs. Turnbull1
- Nicholas Chevalier1