Records of the Columbia River Fishing and Trading Company, consisting of ledgers, a letter book, and loose papers. The firm was established by Nathaniel J. Wyeth (1802-1856) and operated from Fort Hall near the near the junction of the Portneuf and Snake rivers in what would later become Idaho. The enterprise was unsuccessful, and Fort Hall was sold to the Hudson's Bay Company in 1837.

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 Kai N. Lee conducted by Michael O'Rourke from May 26-27, 1999, as part of the Northwest Power Planning Council Oral History Project. Lee represented Washington on the Northwest Power Planning Council, now known as the Northwest Power and Conservation Council, from 1983 to 1987.

Oral history interview with Ed W. Sheets conducted by Michael O'Rourke from November 10, 1998, to September 28, 2000, as part of the Northwest Power Planning Council Oral History Project. Sheets discusses serving as executive director of the Northwest Power Planning Council, now known as the Northwest Power and Conservation Council, from 1981 to 1995.

Oral history interview with Tim Wapato conducted by Michael O'Rourke from August 4 to November 16, 2002, as part of the Northwest Power Planning Council Oral History Project. Wapato discusses his work on the Columbia River Inter-Tribal Fish Commission.

Oral history interview with Al Wright conducted by Michael O'Rourke from April 15 to October 28, 2002, as part of the Northwest Power Planning Council Oral History Project. Wright was executive director of the Pacific Northwest Utilities Conference Committee from 1985 to the mid-1990s.