Former Owner
- John Ruskin1
- John Topham1
- John Wright1
- Joseph Whitney1
- Josephine Widener Wichfield1
- Julia Burgess1
- Lady Margaret Ayloffe1
- Lambertus Eerens1
- Lathrop Colgate Harper1
- Laurence Kirby1
- Leo Olschki1
- Libri, Edoardo, active 20th century1
- Louis Bourguet1
- Marchese Porri-Carcani1
- Margaret F. Woodward1
- Margaret Le Seigneur1
- Margaret of Croy1
- Marguerite de Belleville1
- Marguerite de Fontenay1
- Marguerite of Lorraine1