Former Owner
- John Morgan1
- John Ruskin1
- John Topham1
- John West, 1st Earl De La Warr1
- John Wright1
- Joseph Whitney1
- Josephine Widener Wichfield1
- Lady Margaret Ayloffe1
- Lambertus Eerens1
- Laurent Campagne1
- Legoué1
- Leo Olschki1
- Libri, Edoardo, active 20th century1
- Lisa Norris Elkins1
- Louis Bourguet1
- Lutheran Theological Seminary at Philadelphia1
- Lydia Thompson Morris1
- Maksymilian Mielzynski1
- Marchese Porri-Carcani1
- Margaret F. Woodward1