Former Owner
- John Camp Williams1
- John D. Stanitz1
- John Fenn1
- John Ruskin1
- John Sotheby1
- Juan Burgueño1
- Judith Lady Montefiore College1
- Julian Burgueño1
- Lancino Curti1
- Levi, David, active 19th century1
- Lionardo di Paolo Adimari1
- Louis Lamm1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1
- Malachia Ormanian1
- Mario Maffei1
- Mark Lansburgh1
- Marvin-L. Colker1
- Mary Augusta Strachey1
- Mayer Sulzberger1