Former Owner
- Alfred John Horwood2
- Art ancien S.A.2
- Charles D. Humberd2
- Cologne Charterhouse2
- Edmund Waterton2
- Edward E. Ayer2
- Eric J. Johnson2
- Ernst Schulz2
- Francesco Taccone2
- Georg Kloss2
- George Amos Poole2
- George Dunn2
- Giannalisa Feltrinelli2
- Harrison Horblit2
- Henry Huth2
- Henry Stevens2
- Hugo Philipp Waldbott-Bassenheim2
- Imre Hodossy2
- James C. Byrne2
- Kartause Erfurt2