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 Walter H. Evans, III conducted by Jim Strassmaier from June 6-9, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Evans served as an aide and legal counsel to Hatfield.

Oral history interview with Gerry Frank conducted by Jim Strassmaier from May 25, 1988, to May 2, 1990, as part of the Senator Mark O. Hatfield Oral History Project. Frank supported Hatfield's political career and served as his chief of staff.

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 Wesley Granberg-Michaelson conducted by Jim Strassmaier from October 18, 1988, to May 28, 1989, as part of the Senator Mark O. Hatfield Oral History Project. Granberg-Michaelson served as a foreign policy advisor on Hatfield's staff from 1969 to 1976.

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 Tom J. Imeson conducted by Michael O'Rourke from September 14 to December 9, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Imeson served on Hatfield's staff from 1969 to 1985.

Oral history interview with Richard H. Jones conducted by Jim Strassmaier from December 11, 1987, to January 13, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Jones served as Hatfield's campaign chair in 1958, 1966, 1978, and 1984.

Oral history interview with Sidney Lezak conducted by Jack G. Collins from August 16, 1988, to June 6, 1990, as part of the United States District Court Oral History Project. Lezak was an attorney in Portland, Oregon, and U.S. attorney for Oregon from 1961 to 1982.

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.