Former Owner
- John James Lewis1
- John Leeche1
- John Roland Abbey1
- John Ruskin1
- John William Harshberger1
- Joseph Barrois1
- Joseph Pope1
- Kloster Rebdorf1
- Lambach Abbey1
- Leicester Harmsworth1
- Leo Olschki1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Lucrezio Palladio degli Olivi1
- Lyon Cathedral1
- M. Haimmiller1
- Margaret Anna Hazard1
- Mario Maffei1
- Mary Schell Collins1
- Matteo Barresi1