- Harrison & Warner.1
- Harrison, John F.1
- Harrison, Samuel, 1789-18181
- Hatchett, J. (John)1
- Hebert Senr., Mr.1
- Henshall, J.1
- Holland Ph.D., Robert F.1
- Home Owners Loan Corporation1
- Hudgins, Andrew1
- Humboldt County (Calif.) -- Community Development Services1
- Humboldt County Community Development Services - Advance Planning Division.1
- Humboldt, Alexander von, 1769-18591
- Hérisson, Eustache, 1759-1
- IOC (Intergovernmental Oceanographic Commission)1
- IUCN--The World Conservation Union1
- Imprimerie Lemercier et cie1
- InfoUSA1
- Infor Alameda County 1
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- Intergovernmental Oceanographic Commission1
