Former Owner
- John Morley1
- John Reiner3
- John Stanley, 18th Earl of Derby1
- John Vyfyan1
- Joseph E. Widener1
- Josephine Widener Wichfield1
- José Antonio Conde1
- Karen L. Gould2
- Kloster Rebdorf1
- Lane Theological Seminary1
- Lathrop C. Harper, Inc.1
- Laurence William Hodson2
- Lawrence J. Schoenberg3
- Leicester Harmsworth1
- Lewis L. Gould2
- Lisa Kiser3
- Louis Lucien Bonaparte1
- Luigi Celotti1
- Léon Gruel1
- M. Pierre Guarin1