- H. B. Heiskell Travel Diary, 1847/19541
- H. May Steinmesch Papers, 1915 - 1975 (bulk 1915-1950), 1915/19756
- H. Sutton Sharp Letter, 1920/19401
- H.K. Ambler Account Books, 1915/19521
- Haddonfield Natural Science Club (Haddonfield, New Jersey) Minute Book, 1921/19262
- Hal Scrugham, Collector, Photographs of Town of Gary and of Local Coal and Coke Plant, 1920/19281
- Haldeman Family Papers, 1824/2018, bulk 1890/19907
- Hall Family Papers, 1810/20072
- Haller-Tyler-McGraw Families Papers, 1913/19861
- Hamilton Family Papers, 1892/2003, bulk 1930/200315
- Hammond Fire Brick Company Papers, 1900/19315
- Hampden-Sydney College Photograph Collection, 177531
- Hampden-Sydney Diploma Collection, 1775/19743
- Hampshire County (W. Va.) Court Records and Miscellaneous Papers, 1736/194950
- Hampshire County Archives, 1736/19491