Tape 1, Side 2. In the first interview session, conducted on July 29, 1998, Hatfield discusses his family background and early life in Dallas and Salem, Oregon, including his Methodist and Baptist upbringing and life in a predominantly Mennonite community. He talks about his childhood activities, the houses he lived in, and his early education. He also reflects on the lack of racial and cultural diversity in his childhood communities. He also talks about his early exposure to politics, particularly regarding the Republican Party. He speaks about the 1934 election for Oregon governor, shares his memories of the 1935 fire at the state Capitol, and talks about his early political ambitions.

Tape 3, Side 1. In the second interview session, conducted on September 29, 1998, Hatfield discusses his Christian faith and involvement with the Baptist Church, and discusses the changes in the Baptist Church after World War II. He talks about his undergraduate studies at Willamette University, including some of his professors, studying history, and his social life. He describes American isolationist sentiment during the rise of Adolf Hitler in Germany and the advent of World War II. He discusses how attitudes changed in the aftermath of the attack on Pearl Harbor, particularly the increase in anti-Japanese sentiment and the U.S. government's eventual incarceration of Japanese Americans. He also talks about people he knew who were conscientious objectors.

Tape 3, Side 2. In the second interview session, conducted on September 29, 1998, Hatfield discusses his Christian faith and involvement with the Baptist Church, and discusses the changes in the Baptist Church after World War II. He talks about his undergraduate studies at Willamette University, including some of his professors, studying history, and his social life. He describes American isolationist sentiment during the rise of Adolf Hitler in Germany and the advent of World War II. He discusses how attitudes changed in the aftermath of the attack on Pearl Harbor, particularly the increase in anti-Japanese sentiment and the U.S. government's eventual incarceration of Japanese Americans. He also talks about people he knew who were conscientious objectors.

Tape 4, Side 1. In the second interview session, conducted on September 29, 1998, Hatfield discusses his Christian faith and involvement with the Baptist Church, and discusses the changes in the Baptist Church after World War II. He talks about his undergraduate studies at Willamette University, including some of his professors, studying history, and his social life. He describes American isolationist sentiment during the rise of Adolf Hitler in Germany and the advent of World War II. He discusses how attitudes changed in the aftermath of the attack on Pearl Harbor, particularly the increase in anti-Japanese sentiment and the U.S. government's eventual incarceration of Japanese Americans. He also talks about people he knew who were conscientious objectors.

Tape 9, Side 1. In the fifth interview session, conducted on December 3, 1998, Hatfield continues to speak at length about his political philosophy. He talks about the organization of Oregon state government, giving examples from his time as governor; and discusses balancing environmental conservation and economic concerns. He also talks about his master’s thesis on Herbert Hoover and about teaching at Willamette University.

Tape 12, Side 2. In the eighth interview session, conducted on September 28, 1999, Hatfield speaks at length about the evolution of his political philosophy throughout his public service career, including his views about regional government, about the separation of powers, and about capitalism. He talks about his 1950 campaign for the Oregon House of Representatives, then begins to discuss his time serving in the Oregon Legislature as a representative from Marion County from 1951 to 1955, with a focus on the 1951 legislative session.

Tape 14, Side 1. In the ninth interview session, conducted on October 8, 1999, Hatfield continues to discuss his time serving in the Oregon Legislature as a representative from Marion County from 1951 to 1955, with a focus on the 1951 legislative session. He speaks about the upheavals in Oregon politics during the 1950s, and how that affected the trajectory of his political career. He also talks about the legislative career of Richard Neuberger and about appointing a successor to Neuberger’s Senate seat while he was governor in 1960. He talks about legislators he served with in the Oregon House, and about his committee assignments. He also talks about his involvement in Dwight D. Eisenhower’s 1952 presidential campaign.

Tape 16, Side 2. In the tenth interview session, conducted on November 17, 1999, Hatfield continues to discuss his involvement in Dwight D. Eisenhower’s 1952 presidential campaign. He also talks about Wayne Morse’s political career. He then continues to discuss his time serving in the Oregon Legislature as a representative from Marion County from 1951 to 1955, with a focus on the 1951 and 1953 legislative sessions.

Tape 19, Side 2. In the thirteenth interview session, conducted on January 20, 2000, Hatfield discusses his activities at the time of the interview, then continues to discuss his Christian faith and personal philosophy. He also talks about how his faith influences his positions on certain political issues, such as assisted suicide.

Tape 24, Side 1. In the sixteenth interview session, conducted on March 9, 2000, Hatfield discusses his time serving in the Oregon Legislature as a senator from Marion County from 1955 to 1957, with a focus on the 1955 legislative session. He talks about legislation he worked on, and about some of his fellow legislators. He reflects on his accomplishments as a state legislator, particularly on civil rights; talks about his relationship with the press; and discusses ambitions for higher office. He talks about his 1956 campaign for Oregon secretary of state.

Tape 25, Side 2. In the seventeenth interview session, conducted on March 30, 2000, Hatfield talks about elections in Oregon in 1956, and continues to speak at length about his campaign for Oregon secretary of state.

Tape 28, Side 1. In the twentieth interview session, conducted on June 8, 2000, Hatfield continues to discuss his 1958 campaign for Oregon governor. He talks about his campaign staff, his strategy, and his primary opponents.

Tape 28, Side 2. In the twentieth interview session, conducted on June 8, 2000, Hatfield continues to discuss his 1958 campaign for Oregon governor. He talks about his campaign staff, his strategy, and his primary opponents.

Tape 29, Side 2. In the twenty-first interview session, conducted on June 22, 2000, Hatfield speaks about his courtship and marriage with Antoinette Kuzmanich. He also talks about her family background, her education, and her affiliation with the Catholic Church.

Tape 31, Side 1. In the twenty-third interview session, conducted on June 4, 2001, Hatfield concludes his discussion of his 1958 campaign for Oregon governor. He also talks about the development of the Oregon and Washington state governments.

Tape 34, Side 1. In the twenty-sixth interview session, conducted on July 26, 2001, Hatfield continues to discuss his service as Oregon governor from 1959 to 1967, with a focus on his first term. He shares his opinion on elected versus appointed government positions. He speaks at length about many of his appointments.

Tape 37, Side 1. In the twenty-eighth interview session, conducted on February 12, 2002, Hatfield continues speaking about building international trade partnerships for Oregon, including trips to West and East Germany in 1965. Hatfield details international political events, including the Korean War and U.S. relations with China, and begins to talk about each presidential election from Dwight D. Eisenhower in 1956 to Ronald Reagan in 1980.

Tape 39, Side 2. In the thirtieth interview session, conducted on April 2, 2002, Hatfield discusses the life of Ira Keller, who died at the time of the interview in 2002. He also speaks about his support for higher education and scientific research in Oregon, particularly Oregon Health Sciences University, and about working with Glenn Jackson. He discusses his opposition to the Vietnam War.

Tape 40, Side 2. In the thirty-first interview session, conducted on April 4, 2002, Hatfield discusses his 1966 campaign for the U.S. Senate, including his endorsement from Senator Wayne Morse, his campaign staff, and his opposition to the Vietnam War. He shares his memories of election night.

Tape 1, Side 1. This oral history interview with Douglas E. Coe was conducted by Clark Hansen in Arlington, Virginia, on June 8, 1988. In this interview, Coe briefly discusses his family background and early life, focusing on his high school years in Salem, Oregon, and his memories of the Hatfield family. He talks about the evolution of his Christian faith, and how that led to his friendship with Mark Hatfield. He discusses how Hatfield's faith influenced his political career. He also talks about Hatfield's marriage to Antoinette Kuzmanich; Hatfield's political role models; and Hatfield's relationships with other politicians. He closes the interview with a discussion of Hatfield's public and private lives.

Tape 1, Side 2. This oral history interview with Douglas E. Coe was conducted by Clark Hansen in Arlington, Virginia, on June 8, 1988. In this interview, Coe briefly discusses his family background and early life, focusing on his high school years in Salem, Oregon, and his memories of the Hatfield family. He talks about the evolution of his Christian faith, and how that led to his friendship with Mark Hatfield. He discusses how Hatfield's faith influenced his political career. He also talks about Hatfield's marriage to Antoinette Kuzmanich; Hatfield's political role models; and Hatfield's relationships with other politicians. He closes the interview with a discussion of Hatfield's public and private lives.

Tape 2, Side 1. In the first interview session, conducted on November 29, 1989, Cook discusses his family background and early life in Southern California, including his family's involvement with conservative Republican politics and his father's suicide. He discusses attending Occidental College in Los Angeles, California; his involvement with the Quaker movement and Buddhism; and the evolution of his political beliefs. He talks about serving in the National Guard from 1967 to 1968, during the Vietnam War. Cook discusses beginning to work as an aide to U.S. Senator Mark Hatfield in 1969.

Tape 6, Side 1. In the second interview session, conducted on November 30, 1989, Cook continues to discuss working as an aide to Hatfield from 1969 to 1973. He talks about Hatfield's political career, including Hatfield's role in coaching California Governor Ronald Reagan and how Hatfield's views on the Vietnam War affected his political career and his family. He talks about writing speeches for Hatfield, his work on anti-draft legislation, and other members of Hatfield's staff, particularly Gerry Frank. He also talks about other legislation he worked on for Hatfield, particularly the Neighborhood Government Act; about Hatfield's 1972 re-election campaign; and about his work on Middle East issues. He closes the interview by discussing the possibilities for Hatfield's future career.

Tape 6, Side 2. In the second interview session, conducted on November 30, 1989, Cook continues to discuss working as an aide to Hatfield from 1969 to 1973. He talks about Hatfield's political career, including Hatfield's role in coaching California Governor Ronald Reagan and how Hatfield's views on the Vietnam War affected his political career and his family. He talks about writing speeches for Hatfield, his work on anti-draft legislation, and other members of Hatfield's staff, particularly Gerry Frank. He also talks about other legislation he worked on for Hatfield, particularly the Neighborhood Government Act; about Hatfield's 1972 re-election campaign; and about his work on Middle East issues. He closes the interview by discussing the possibilities for Hatfield's future career.

Tape 1, Side 1. This oral history interview with Jenna L. Dorn was conducted by Clark Hansen at the Union Pacific Building in Washington, D.C., from June 13-15, 1988. In this interview, Dorn discusses her family background and early life in La Grande, Oregon. She discusses moving to New Haven, Connecticut, and her involvement in the women’s movement. She talks about how she joined the staff of U.S. Senator Mark Hatfield in 1977; her work as a legislative assistant; and other members of Hatfield’s staff, particularly Gerry Frank. She discusses legislation that she worked on for Hatfield, particularly regarding women’s rights and the environment. She discusses how Hatfield communicated with his constituency, and Hatfield’s efforts against the budget cuts by the Reagan administration while he was serving on the Appropriations Committee. She talks about Hatfield’s working relationship with U.S. Senator Bob Packwood and other members of the Oregon congressional delegation. She relates some anecdotes to demonstrate Hatfield’s personality and spirituality. She also talks about leaving Hatfield’s staff to work with Elizabeth Dole. She closes the interview by discussing the interpersonal relationships of Hatfield’s staff.

Tape 5, Side 1. This oral history interview with Jenna L. Dorn was conducted by Clark Hansen at the Union Pacific Building in Washington, D.C., from June 13-15, 1988. In this interview, Dorn discusses her family background and early life in La Grande, Oregon. She discusses moving to New Haven, Connecticut, and her involvement in the women’s movement. She talks about how she joined the staff of U.S. Senator Mark Hatfield in 1977; her work as a legislative assistant; and other members of Hatfield’s staff, particularly Gerry Frank. She discusses legislation that she worked on for Hatfield, particularly regarding women’s rights and the environment. She discusses how Hatfield communicated with his constituency, and Hatfield’s efforts against the budget cuts by the Reagan administration while he was serving on the Appropriations Committee. She talks about Hatfield’s working relationship with U.S. Senator Bob Packwood and other members of the Oregon congressional delegation. She relates some anecdotes to demonstrate Hatfield’s personality and spirituality. She also talks about leaving Hatfield’s staff to work with Elizabeth Dole. She closes the interview by discussing the interpersonal relationships of Hatfield’s staff.

Tape 6, Side 1. This oral history interview with Jenna L. Dorn was conducted by Clark Hansen at the Union Pacific Building in Washington, D.C., from June 13-15, 1988. In this interview, Dorn discusses her family background and early life in La Grande, Oregon. She discusses moving to New Haven, Connecticut, and her involvement in the women’s movement. She talks about how she joined the staff of U.S. Senator Mark Hatfield in 1977; her work as a legislative assistant; and other members of Hatfield’s staff, particularly Gerry Frank. She discusses legislation that she worked on for Hatfield, particularly regarding women’s rights and the environment. She discusses how Hatfield communicated with his constituency, and Hatfield’s efforts against the budget cuts by the Reagan administration while he was serving on the Appropriations Committee. She talks about Hatfield’s working relationship with U.S. Senator Bob Packwood and other members of the Oregon congressional delegation. She relates some anecdotes to demonstrate Hatfield’s personality and spirituality. She also talks about leaving Hatfield’s staff to work with Elizabeth Dole. She closes the interview by discussing the interpersonal relationships of Hatfield’s staff.

Tape 5, Side 1. This oral history interview with Walter H. Evans III, was conducted by Jim Strassmaier in Washington, D.C., from June 6-9, 1988. The audio is incomplete; Tape 3 was discovered to be blank in 2020. That portion of the interview is reflected in an incomplete transcript.In this interview, Evans discusses his family background and early life in Portland, Oregon, including his early political beliefs. He speaks briefly about attending the University of Oregon and the Willamette University College of Law, then talks about working as a law clerk for Oregon Supreme Court Chief Justice William Perry, as well as his role in the creation of the Oregon Court of Appeals. He also talks about his friendship with Gerry Frank and becoming part of U.S. Senator Mark Hatfield’s staff. He describes his duties as a legislative aide, then a press aide, and as legal counsel to Hatfield. He talks about other members of Hatfield’s staff; Hatfield’s relationship with other senators; and Hatfield’s opposition to the Vietnam War. He discusses legislation that Hatfield worked on, Hatfield’s 1972 re-election campaign, and Hatfield’s relationship with Oregon Governor Tom McCall and U.S. Senator Bob Packwood. He discusses appointments to federal offices in Oregon made during Hatfield’s tenure and communicating with the press. He also speaks more about Hatfield’s opposition to the Vietnam War. He also talks about Hatfield’s handling of the Watergate scandal. Evans closes the interview by discussing Hatfield’s home and family life.