Former Owner
- John Lumley, 1st Baron Lumley1
- John M Crawford, active 17601
- John M Cuthbert1
- John McRay1
- John Morley1
- John Stanley, 18th Earl of Derby1
- John Vyfyan1
- Joseph E. Widener1
- Josephine Widener Wichfield1
- José Antonio Conde1
- Kloster Rebdorf1
- Lane Theological Seminary1
- Lathrop C. Harper, Inc.1
- Leicester Harmsworth1
- Louis Lucien Bonaparte1
- Luigi Celotti1
- Léon Gruel1
- M. Pierre Guarin1
- Mannheimer Hofbibliothek1
- Mary Bloch1