Oral history interview with Harold H. Cake conducted by Linda S. Dodds in Portland, Oregon, in two sessions from September 2-14, 1982. Cake discusses the history of Equitable Savings and Loan.

Oral history interview with Sam R. Christensen conducted by Judy Hartman on January 12, 1988, as part of the Portland General Electric Centennial Oral History Series. Christensen joined Portland General Electric in 1956 as an engineer, ultimately working his way up to general manager of Generation & Facilities Engineering.

Oral history interview with Charles L. Hayward conducted by Jim Strassmaier from April 13 to May 4, 1994, as a sequel to an earlier interview conducted in 1979 by Linda S. Dodds. Hayward served as a balloon lookout for the U.S. Army during World War I and later manufactured time switches and clock motors.