Encyclopedias, Almanacs, Transcripts, and Maps
- History of Exploration III (Modern Era)
- History of Geoscience: Women in the History of Geoscience
- History of Immunology
- History of Manned Space Exploration
- History of Microbiology
- History of the Development of Antibiotics
- Hitler Diaries
- HIV/AIDS in Africa
- Hmana Zena
- Hmin Nat
- Hoatzin: Opisthocomiformes
- Hobby, Gladys Lounsbury (1910-1993)
- Hobgoblins
- Hockley, Frederick (1809-1885)
- Hod
- Hodgkin’s Disease
- Hodgson, Richard (1855-1905)
- Hoebens, Piet Hein (1948-1984)
- Hoffer, Abram (1917-)
- Hohenlohe, Prince (1794-1849)