Oral history interview with Janet L. Lamos conducted by Michael O'Rourke from June 3-8, 1988, as part of the Senator Mark O. Hatfield Oral History Project. Lamos was executive assistant to Hatfield beginning in 1980.

Oral history interview with Drew D. Pettus conducted by Michael O'Rourke on June 5, 2002, as part of the Northwest Power Planning Council Oral History Project. Pettus discusses his work on the 1980 Northwest Power Act as chief of staff for U.S. Representative Al Swift.

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.