Former Owner
- Lionel Tollemache, 4th Earl of Dysart1
- Lisa Norris Elkins1
- Little family1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Loftus Bland1
- Long Island Historical Society, Maine1
- Lorenzo Berdute1
- Louis Thompson Rowe1
- Louis XIV of France1
- Lucien Delamarre1
- Lucien Magne1
- Lucy Evans Chew1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Serra di Cassano1
- Luis Ordoñez1
- Luther Albertus Brewer1
- Lutheran Theological Seminary at Philadelphia1
- Léon Gruel1
- M. De La Tour1
- M. Louise Stowell1