Former Owner
- Herbert B. Nichols1
- Hercules Silva1
- Herschel V. Jones1
- Horace de Landau1
- House of Colonna1
- House of Sforza1
- Hákon Snæbjörnson1
- I. I. Zur-Mühlen1
- Jacques Vellekoop1
- James C. Byrne1
- Jean Bondieu1
- Jeannette Dwight Bliss1
- Joaquín Gómez de la Cortina1
- Johann Egolph1
- Johann von Firmian1
- John Alfred Wigan1
- John B. Stetson Jr.1
- John Bellingham Inglis1
- John Burns1
- John Couch Adams1