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 Frank C. Cook conducted by Clark Hansen from November 29-30, 1989, as part of the Senator Mark O. Hatfield Oral History Project. Cook was an aide to Hatfield from 1969 to 1973.

Oral history interview with Thomas R. Getman conducted by James Strassmaier from June 3-8, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Getman was legislative director for Hatfield from 1978 to 1985.

Oral history interview with J. Keith Kennedy conducted by Jim Strassmaier on June 8, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Kennedy was staff director for the Senate Appropriations Committee.

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.

Interview with Wayne Morse conducted as part of his 1968 re-election campaign. Morse was a U.S. Senator from Oregon.

Oral history interview with Maurine Neuberger conducted by Cynthia Harrison on December 15, 1978. Neuberger served in the Oregon House of Representatives from 1951 to 1955 and in the U.S. Senate from 1960 to 1964.

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 Rick Rolf conducted by Michael O'Rourke from June 3 to September 24, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Rolf was an advisor to Hatfield.

Oral history interview with Riki P. Sheehan conducted by Michael O'Rourke from June 2-11, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Sheehan was a caseworker and legislative assistant on Hatfield's staff.