This oral history interview with Tom J. Imeson was conducted by Michael O'Rourke in Salem, Oregon, and at the Oregon Historical Society in Portland, Oregon, from September 14 to December 9, 1988. In this interview, Imeson discusses his family background and early life in Portland, including his early interest in politics. He then discusses studying political science at Tulane University in New Orleans, Louisiana, and at George Washington University in Washington, D.C. He talks about how he became a member of U.S. Senator Mark Hatfield's staff in 1969 as a legislative aide specializing in natural resources. He describes legislation he worked on, other members of Hatfield's staff, and Hatfield's opposition to the Vietnam War. He talks about Hatfield's relationship with the Nixon administration, as well as Hatfield's relationship with other Oregon politicians. He speaks at length about Hatfield's 1972 re-election campaign. He talks about the changes in the staff after Hatfield was re-elected, including the increased role of Gerry Frank. Imeson also discusses his marriage to fellow staffer Brenda Thangmeyer and talks about the Watergate scandal. He speaks at length about legislation he worked on regarding environmental, Native American, and logging issues. He discusses Hatfield's opposition to nuclear power, Hatfield's work on the Appropriations Committee, and Hatfield's relationship with Oregon governors, particularly Tom McCall and Neil Goldschmidt.

Imeson discusses running Hatfield's Oregon office from 1981 to 1985. He talks about some of his duties, including working with the Army Corps of Engineers. He also discusses a real estate scandal that affected Hatfield's 1984 re-election campaign. He talks about Hatfield's main accomplishments and legislative agenda, and about Hatfield's personal and family life. Imeson discusses his career since leaving Hatfield's staff, including working for PacifiCorp and as chief of staff for Governor Neil Goldschmidt, as well as his continued relationship with Hatfield. He closes the interview by discussing at length the passage of the Wild and Scenic Rivers bill.