Former Owner
- John William Harshberger1
- Joseph Anton Koch1
- Joseph François René de Kergariou1
- Joseph Pope1
- José Fernando Ramírez1
- Kaikhusroo Minocher Jamaspasa2
- Karl Theodor Völcker's Verlag Und Antiquariat3
- Karl Wilhelm Hiersemann8
- Kloster Kuringen1
- Lambertus Eerens1
- Lathrop Colgate Harper1
- Laurence Claiborne Witten II1
- Laurence Kirby1
- Laurent Campagne1
- Lawrence J. Schoenberg2
- Legoué1
- Leonello d'Este, Marquis of Ferrara2
- Louis Charles Elson1
- Louis H. Silver1
- Lucy Evans Chew1