Former Owner
- Gilhofer & Ranschburg. Lucerne, Suisse1
- Grosvenor, Richard1
- Guglielmo Libri Carucci dalla Sommaja2
- H. P. Kraus (firm)2
- Henry Huth1
- Henry Lewis Broomall1
- Henry Probasco1
- Henry Spelman1
- Hermann Suchier1
- House of Neville1
- Hugo Philipp Waldbott-Bassenheim1
- Hákon Snæbjörnson1
- Jacob Suter1
- James C. Byrne1
- James Halliwell-Phillipps1
- James Melville Hunnewell1
- Joannes Hainricus Ebron zu Wildenberg1
- Johann Heinrich van Ess3
- John Stow1
- John Taylor1