[2] OHC staff also conduct research on a wide range of historical topics, utilizing oral history as a central primary source to their scholarship.
Since its founding in 1954, the OHC has conducted thousands of interviews in a wide variety of subject areas ranging from law and jurisprudence to food and wine.
ROHO features especially strong collections on the development of the arts and letters, science and technology, and labor, social, political, and community history in California.
Interviews with scientists include Nobel Prize winners such as Arthur Kornberg, Paul Berg, Donald A. Glaser, and Charles Townes.
The OHC has also conducted significant oral histories with well-known artists and authors, such as Dorothea Lange, Ansel Adams, and Carl Rakosi.