This oral history interview with Wendell Wyatt was conducted by Clark Hansen from May 17-19, 1988. In this interview, Wyatt briefly discusses his family background and early life in Eugene, Oregon, particularly the development of his political beliefs. He talks about his early career, including working as a special agent for the FBI, serving in the Marines during World War II, and practicing law in Astoria, Oregon. He then discusses his involvement with the Republican Party and his legislative career. He shares his memories of Mark Hatfield, including Hatfield's relationship with Oregon's political parties, Hatfield's primary political opponents, and Hatfield's involvement with the 1964 Barry Goldwater presidential campaign.

Wyatt then discusses serving in the U.S. House of Representatives, including his campaigns. He talks about working with Hatfield, then governor of Oregon, on Oregon-focused legislation, as well as working with Hatfield's staff. He also talks about Hatfield's opposition to the Vietnam War and his 1966 campaign for U.S. Senate. Wyatt also describes U.S. Senator Wayne Morse. He goes on to speak further about Hatfield, including his staff in Washington, D.C., and Hatfield's pacifism and political alignment. He speaks at length about the 1968 Republican Convention when Hatfield was being considered as Richard Nixon's running mate, as well as Hatfield's continued opposition to the Vietnam War and legislation he worked on related to it. Wyatt talks about the Oregon Republican Party's structure, Walter Huss as its chair, and the party's increasing conservatism. He closes the interview by discussing Hatfield's effectiveness as a U.S. senator, as well as Wyatt's social relationship with Hatfield.

This oral history interview with Lois D. Siegmund was conducted by Clark Hansen at Siegmund's home in Salem, Oregon, on June 23, 1988. In this interview, Siegmund discusses her early life in Gervais, Oregon, including her memories of life during World War I. She then discusses her early career in state government, her marriage to Jacob Laurence Siegmund, and quitting state government to work in a meat market with her husband. Siegmund then discusses returning to state government in 1951 as a legislative secretary, first for Representative Roy Houck, then for Representative Mark Hatfield. She talks about Hatfield's campaign for the state Senate in 1954 and about working as a secretary for him in the Senate. She also discusses Hatfield's campaign for Oregon secretary of state in 1956. She describes her duties as Hatfield's personal secretary, other members of Hatfield's staff, and Hatfield's marriage to Antoinette Kuzmanich.

Siegmund then discusses Hatfield's 1958 campaign for Oregon governor. She talks about the changes in Hatfield's staff after his election. She shares anecdotes about major events that occurred during his governorship, including the 1962 Columbus Day Storm, Hatfield's 1964 keynote speech at the Republican National Convention, and her role in keeping Hatfield on schedule. She also talks about Hatfield's relationship with Tom McCall, his campaign for the U.S. Senate in 1967, and her reasons for not going with him to Washington, D.C. She closes the interview by discussing her continued relationship with Hatfield.

This oral history interview with Robert Vernon "Vern" Cook was conducted by Clark Hansen at Cook's law office in Gresham, Oregon, and Cook's home in Troutdale, Oregon, from December 15, 1994, to October 15, 1995. In the interview, Cook discusses his family background and early life during the Depression in Las Animas, Colorado, and in Gresham. He also describes being a young man during World War II; being denied enlistment in the Navy due to polio; and his rehabilitation from polio. Cook discusses studying political science at Reed College and law at the University of Oregon, all while working concessions at various businesses in California with his brother. He talks about practicing law in Gresham; his involvement with the Democratic Party; and his first campaign for the Oregon House of Representatives in 1956. Cook discusses the legislation he worked on while serving in the House, including taxation, education, and worker's compensation. He also talks about serving on the judicial committee and related issues. He discusses some of the legislators he worked with, including Pat Dooley and Monroe Sweetland, as well as Governor Mark Hatfield.

Cook then describes his experience in the Oregon Senate, including serving on the judiciary committee and legislation on taxation, particularly sales taxes, as well as health insurance, education, land use, agriculture, domestic violence, and labor. He also talks about working with senators Tom Mahoney, Edith Green, Walter Pearson, Debbs Potts, Monte Montgomery, Alice Corbett, Ted Hallock, Jason Boe, and Vic Atiyeh. Cook also discusses party politics and its influence on the effectiveness of the Legislature during his tenure; the 1968 Democratic National Convention; and working with Governor Tom McCall and Portland Mayor Neil Goldschmidt. He also talks about his unsuccessful campaigns for a seat in the U.S. House of Representatives and U.S. Senate; his involvement in Frank Church's campaign in the Democratic presidential primary in 1976; and the financial difficulties he faced as a legislator. He closes the interview by discussing his career as a lawyer since leaving the Legislature in 1980.

This oral history interview with Wallace P. Carson, Jr. was conducted by Clark Hansen at the Oregon Supreme Court in Salem from June 12 to October 24, 1996. In the interview, Carson discusses his early life and childhood in Salem, including his memories of World War II. He also discusses his education, from elementary school to attending Stanford University and Willamette University Law School. He also discusses meeting his wife, Gloria Stolk, and his involvement with the Republican Party. Carson describes his 34-year military career in the Air Force and the Oregon National Guard, as both a pilot and a lawyer. He also talks about practicing law in Salem.

Carson then talks about his political career, beginning with his election to the Oregon House of Representatives in 1966. He discusses legislation on topics including taxes, particularly a sales tax; land use; education; and women's rights. Carson describes his time in the Oregon Senate, from 1970 to 1977, including his campaign, the Vietnam War, taxes, his relationship with the media, the criminal code, labor, utilities, and health care. He also discusses working with Oregon legislators and governors, including Tony Yturri, Mark Hatfield, Tom McCall, Senate Secretary Cecil Edwards, Vic Atiyeh, Bob Straub, and Jason Boe.

Carson then discusses his experience on the Marion County Circuit Court from 1977 to 1982, including cases on medical malpractice. Carson next turns to his service on the Oregon Supreme Court from 1982 to 2006. He discusses cases he presided over on topics including capital punishment, mental illness, privacy, search and seizure, and elections. He also discusses the role of the chief justice, court procedure, and his interactions with attorneys. Carson discusses his fellow justices, including Betty Roberts, Jacob Tanzer, Arno Denecke, Hans Linde, and Mitch Gillette. He also discusses the history of penal systems, his re-election campaigns, and his home life.

This oral history interview with David S. Barrows was conducted by Jim Strassmaier from January 31 to March 13, 2000. In this interview, Barrows discusses his family history and childhood in the San Francisco Bay Area of California and in Washington, D.C., as well as his high school education in California. He then talks about attending Willamette University, including having Mark Hatfield as a professor and mentor. Barrows discusses working as a page in the Oregon Legislature and his interest in a career as a lobbyist. He talks briefly about going to law school and practicing law. Barrows then talks about lobbying for the Fairview Home in the 1959 and 1961 legislative sessions, as well as his later lobbying work for tobacco wholesalers and the Oregon Savings and Loan League. His lobbying work included topics such sterilization, taxation, and financial regulations. He also talks about the history of Oregon and California Railroad Revested Lands and his lobbying for the Association of O & C Counties. He also speaks in great detail about legislative procedure, the rules regulating lobbyists, and the relationship between lobbyists and legislators. Barrows closes the interview with a discussion of his lobbying work on behalf of the Oregon Historical Society.