Unprocessed collection of miscellaneous records of the Bonneville Power Administration, including progress reports of the fish-passage research program, correspondence, and statistical data on the capacity of the Bonneville fishways.

Small collection of black and white photographic prints and nitrate negatives depicting dams and dam construction. Identified locations include the Gold Ray Dam on the Rogue River in Oregon, and the Copco No. 1 and Copco No. 2 dams on the Klamath River at the Oregon-California border.

Mimeograph copies of speeches delivered by Tennessee Governor Frank G. Clement to Democratic Party meetings at Lewiston, Idaho, on March 19, 1954, and at Yakima, Washington, on March 20, 1954, regarding the potential development of hydroelectric power on the Snake River.

Oral history interview with Chuck T. Collins conducted by Michael O'Rourke on October 19, 1999, as part of the Northwest Power Planning Council Oral History Project. Collins was a member of the council, now known as the Northwest Power and Conservation Council, from 1981 to 1986.

Collection of black and white photographs that were published in the Oregon Journal newspaper and are related to the Detroit Dam. The images show Detroit, Oregon, before the dam was built, the excavation of the dam site, construction and dedication of the dam, and the resulting lake. Many of the photographs were taken by the U.S. Army Corps of Engineers.

Oral history interview with Angus Duncan conducted by Jim Strassmaier from July 15 to September 24, 1999, as part of the Northwest Power Planning Council Oral History Project. Duncan discusses his career in public service, particularly his service as a member of the Northwest Power Planning Council from 1990 to 1995.

Oral history interview with Tom L. Eckman conducted by Michael O'Rourke from September 16, 1998, to September 29, 2000, as part of the Northwest Power Planning Council Oral History Project. Eckman was manager of conservation resources for the Northwest Power Planning Council, now known as the Northwest Power and Conservation Council, from 1982 to 2014.

Oral history interview with John N. Etchart conducted by Michael O'Rourke from August 8, 2002, to May 26, 2004, as part of the Northwest Power Planning Council Oral History Project. Etchart represented Montana on the Northwest Power Planning Council, now known as the Northwest Power and Conservation Council, from 1993 to 2000.

Oral history interview with Daniel J. Evans conducted by Michael O'Rourke from February 29 to March 1, 2000, as part of the Northwest Power Planning Council Oral History Project. Evans served as the first chair of the Northwest Power Planning Council, now known as the Northwest Power and Conservation Council, from 1981 to 1983.

Collection consists of photographs taken by Morris Halperin on behalf of the Pelton Water Wheel Company. Most photographs depict the manufacturing of equipment for Portland General Electric and the Lookout Point dam.