- HIV-AIDS Caregivers Oral History Project (35)
- Hamilton-Madison House Records (1)
- Harlem YMCA (125th Street) Records (15)
- Harlem YMCA (135th Street) records (78)
- Harlem YMCA Photographs (101)
- Harold Macy Papers (2)
- Hartley Family papers (UMD) (2971)
- Hashika-e, Measles Posters (49)
- Helen Hall Papers (35)
- Helen Hart Papers (43)
- Helmut G. Heinrich Papers (21)
- Henry Francis Nachtrieb Papers (70)
- Henry Street Music School Records (66)
- Henry Street Settlement Records (39)
- Herbert Parker Lansdale, Jr. Papers (150)
- High Altitude Plastic Balloon Project (1779)
- Hillel of the University of Minnesota Records (6)
- Historical Annual Reports (528)
- Historical Atlases (26)
- Historical Maps (9984)
