Former Owner
- Herbert B. Nichols1
- Herbert Watney1
- Hispanic Society of America1
- House of Neville1
- Hubert Palmer Greville1
- Hugo Philipp Waldbott-Bassenheim1
- Hugo von Walderdorff1
- Huysburg1
- Ibrāhīm al-Shakūrī1
- Institut für Orientalistik (Universität Wien)1
- J. E. Schulte1
- J. Meade Falkner1
- Jacopo Ripanda1
- Jacques Auguste de Thou1
- James & Mary Lee Tregaskis (Firm)1
- James F. Drake1
- James Halliwell-Phillipps1
- James K. Moffitt1
- James Ley, 1st Earl of Marlborough1
- James Lyell1