Former Owner
- Joseph L. Lilly1
- Joseph May Spetzler1
- Karl F. Morrison1
- Kartause Erfurt1
- Kloster Rebdorf1
- Lathrop C. Harper, Inc.1
- Lathrop Colgate Harper1
- Lawrence J. Schoenberg1
- Librairie Tross1
- Louis H. Silver1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Celotti1
- Margaret Barclay Wilson1
- Marienstiftsgymnasium1
- Mark Lansburgh1
- Matthew Donadski1
- Melk Abbey1
- Menno Hertzberger1
- Michael Greenberg1
- Minerva Kaiser1