Former Owner
- Jérôme Pichon1
- Jón Þorstensson1
- K-L1
- K. B. Starkie1
- Karen L. Gould25
- Karl Anton, Prince of Hohenzollern1
- Karl F. Morrison2
- Karl Leopold Strauven1
- Karl Theodor Völcker's Verlag Und Antiquariat3
- Karl Wilhelm Hiersemann9
- Katharinenkirche, Nuremberg1
- Katherine Somerset Wyttenbach Fenwick5
- Keifer1
- Keith Jarvis4
- Kenneth Hyde1
- Kenneth J. "Bud" Jennings2
- Kloster Kuringen1
- Kloster Rebdorf2
- Konrad von Maurer1
- Kulturhistorisches Museum Magdeburg1