Former Owner
- Julian Burgueño1
- Kenneth Hyde1
- Lancino Curti1
- Laurence Claiborne Witten II1
- Laurence Kirby1
- Law Society1
- Leicester Harmsworth1
- Leonard Grey, 1st Viscount Grane1
- Levi, David, active 19th century1
- Lionardo di Paolo Adimari1
- Lodovicus Saltariellus1
- Lorenzo Antonio da Ponte1
- Louis César de La Baume Le Blanc1
- Louis Lamm1
- Louis Thompson Rowe1
- Lucrezio Palladio degli Olivi1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Clerici1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1