Former Owner
- John Topham2
- John Towneley2
- John Wright2
- Joseph Haslewood2
- Joseph L. Lilly2
- Josephine Widener Wichfield2
- Kaikhusroo Minocher Jamaspasa2
- Karl F. Morrison2
- Kartause Erfurt2
- Karva, Lakṣmaṇabhaṭṭa2
- Katharinenkirche, Nuremberg2
- Kenneth J. "Bud" Jennings2
- Kloster Rebdorf2
- Lane Theological Seminary2
- Leonardo Lapiccirella2
- Leopold Gruber2
- Lew David Feldman2
- Librairie Damascène Morgand2
- Libreria la Bibliofila2
- Lionel Tollemache, 4th Earl of Dysart2