Former Owner
- Ashridge Priory4
- Baldassarre Boncompagni4
- Beverly Chew4
- Brayton C. Ives4
- Charles Butler4
- Clarence S. Bement4
- Cortlandt F. Bishop4
- Edward Clark Streeter4
- Erik von Scherling4
- Ethelinda Schaefer Castle4
- Foliophiles4
- Frans de Groot4
- George Arthur Plimpton4
- George D. Smith4
- George F. Leighton4
- George Venables-Vernon, 5th Baron Vernon4
- Hugo Philipp Waldbott-Bassenheim4
- J. & J. Leighton4
- James Halliwell-Phillipps4
- James K. Moffitt4