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 Michele DeHart, conducted by Clark Hansen on December 11, 1998, as part of the Columbia River Dissenters Oral History Series. DeHart discusses her work as a fish biologist and as manager of the Fish Passage Center in Portland, Oregon, and talks about fish conservation measures in the Columbia River Basin.

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 Philip A. Meyer, conducted by Clark Hansen on April 5, 2000, as part of the Columbia River Dissenters Oral History Series. Meyer discusses Canadian and United States policies regarding water use and energy production in the Pacific Northwest, and talks about his work as a private consultant for the U.S. Bureau of Indian Affairs and for the Yakama Nation.

Oral history interview with Charles F. Ray, conducted by Clark Hansen in two sessions, on July 27 and July 28, 1999, as part of the Columbia River Dissenters Oral History Series. Ray speaks extensively about his work with Idaho Rivers United to advocate for the restoration of Snake River salmon and steelhead runs.

Oral history interview with Daniel J. Rohlf, conducted by Clark Hansen in three sessions, from August 9 to Spetember 30, 1999, as part of the Columbia River Dissenters Oral History Series. Rohlf discusses his work as an environmental lawyer in Portland, Oregon, particularly his efforts to get salmon listed as endangered under the Endangered Species Act.

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 Glen H. Spain, conducted by Clark Hansen in two sessions on June 10, 2000, and July 1, 2000, as part of the Columbia River Dissenters Oral History Series. Spain discusses his work with the Pacific Coast Federation of Fishermen's Associations (PCFFA), environmental litigation in which he participated on the PCFFA's behalf, and PCFFA-supported proposals for dam removal in the Pacific Northwest.

Oral history interview with Ted Strong, conducted by Clark Hansen in two sessions, on January 17 and January 18, 2000, as part of the Columbia River Dissenters Oral History Series. Strong discusses his work as comptroller for the Confederated Tribes and Bands of the Yakama Nation, and as executive director of the Columbia River Inter-Tribal Fish Commission.