Oral history interview with Marian J. Bruner conducted by Clark Hansen on June 18, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Bruner was executive assistant to Hatfield from 1967 to 1981.

Oral history interview with Marty B. Gold conducted by Clark Hansen from June 13-16, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Gold was a legal assistant to Hatfield.

Oral history interview with Mark O. Hatfield conducted by Clark Hansen from July 29, 1998, to May 22, 2002, as part of the Senator Mark O. Hatfield Oral History Project. Hatfield was an Oregon state legislator, Oregon secretary of state, Oregon governor, and a U.S. senator.

Oral history interview with Sam H. Mallicoat conducted by Clark Hansen from May 23-27, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Mallicoat was Hatfield's chief of staff from 1967 to 1973.

Oral history interview with Judge Betty Roberts conducted by Clark Hansen as part of the Oregon Legislature Oral History Series. Roberts was an Oregon Court of Appeals judge and state Supreme Court justice.

Oral history interview with Jack Robertson conducted by Clark Hansen from November 7 to December 30, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Robertson was a legislative aide and press secretary for Hatfield from 1973 to 1982.

Oral history interview with Wendell Wyatt conducted by Clark Hansen from May 17-19, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Wyatt was a U.S. congressman from Oregon.