- Gordon, Martin E. (Martin Eli) (1921- )1
- Greene & Champlin, Druggists and Stationers1
- H. D. Schmidt1
- Harrison, Ross G. (Ross Granville), 1870-19591
- Hawksley and Son1
- Hooker, D., MD1
- Hoxie, Thomas Burton, MD, (1794 - 1837) (Cayuga)1
- Huizinga Gift1
- J. Bishop and Company Platinum Works1
- J. H. Gemrig1
- J. Reynberg and Company1
- J. Sklar and Company1
- Jackson, Edith B., MD1
- Jacob H. Gemrig1
- Jean-Louis Jacques Baradelle (1752-1794)1
- Jenks, Edward Wallace (1833-1903)1
- John Charnley, MD1
- John D. Chevalier1
- John Reynders and Company1
- John Wagner and Sons1
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