Former Owner
- L. C. Harper1
- Lane Theological Seminary2
- Lathrop Colgate Harper2
- Laurence Hilliard1
- Laurence William Hodson2
- Lawrence J. Schoenberg15
- Leicester Harmsworth1
- Leonardo Lapiccirella1
- Lewis L. Gould4
- Lima Public Library1
- Lionel Tollemache, 4th Earl of Dysart1
- Lisa Kiser4
- Llanthony Priory1
- Louis II, Count of Flanders1
- Louis N. Cassett1
- Lucrezio Palladio degli Olivi1
- Ludwig Rosenthal1
- Luigi Arrigoni2
- Lyon Cathedral1
- Léon Gruel1