Former Owner
- Joseph E. Widener1
- José Antonio Conde1
- Keith Jarvis1
- Kloster Rebdorf1
- L. C. Harper1
- Lane Theological Seminary1
- Lathrop Colgate Harper1
- Laurence Hilliard1
- Leicester Harmsworth1
- Leonardo Lapiccirella1
- Lima Public Library1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Louis II, Count of Flanders1
- Lucrezio Palladio degli Olivi1
- Ludwig Rosenthal1
- Lyon Cathedral1
- Léon Gruel1
- L’Art Ancien1
- Maksymilian Mielzynski1