- Gräf, A. (Adolf), active 1855-18781
- Gunche, Wiebeck y Turtl1
- Hall, Sidney1
- Hall, Sydney1
- Hall, Sydney, fl. 1818-601
- Hall, Wm. Ham. (William Hammond)1
- Harimaya, Kyūbē1
- Harrison, John F.1
- Harrison, Samuel, 1789-18181
- Hatchett, J. (John)1
- Hebert Senr., Mr.1
- Henshall, J.1
- Home Owners Loan Corporation1
- Hopkins Marine Station1
- Humboldt, Alexander von, 1769-18591
- Hérisson, Eustache, 1759-1
- IOC (Intergovernmental Oceanographic Commission)1
- Imprimerie Lemercier et cie1
- Intergovernmental Oceanographic Commission1
- International Boundary Commission1
