Oral history interview with Reed Burkholder, conducted by Clark Hansen in two sessions on July 3 and July 4, 1999, as part of the Columbia River Dissenters Oral History Series. Burkholder discusses his advocacy for the removal of dams on the Snake River in Idaho.

Oral history interview with Walter R. Butcher, conducted by Clark Hansen on October 23, 1999, as part of the Columbia River Dissenters Oral History Series. Butcher discusses government programs that benefit farmers, particularly the Columbia River Basin Irrigation Project, as well as his involvement with cost-benefit studies related to dams and irrigation projects.

Oral history interview with Ed Chaney, conducted by Clark Hansen in two sessions, on May 4 and May 5, 1998, as part of the Columbia River Dissenters Oral Histories Series. Chaney, founder of the Northwest Resource Information Center, discusses his opposition to the fish conservation policies of the organizations that manage the Columbia River Basin and the dams in the basin.

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 Cort Conley, conducted by Clark Hansen on May 10, 1998, as part of the Columbia River Dissenters Oral History Series. Conley discusses his experience as a boatman on the Salmon River and Snake River in Idaho, and talks about changes in the Hells Canyon area between 1972 and 1998.

Black and white photographs and cyanotypes, primarily in two albums. Scenes in one album relate to work by the U.S. Geological Survey in the Pacific Northwest from 1898-1900, particularly in Idaho; locations include Coeur d'Alene Lake, Spokane, Mount Adams, the Columbia River Gorge, and Mount Hood. The second album includes photographs of an irrigation project near Medford, Oregon.

Collection includes consists of a letterpress book, 1896-1898, with correspondence, monthly and annual reports, ore test data and values.

Oral history interview with Pat Ford, conducted by Clark Hansen on May 7, 1998, as part of the Columbia River Dissenters Oral History Series. Ford discusses his work with the Idaho Conservation League from 1977 to 1984, and with the Save Our Wild Salmon Coalition from 1991 to the time of the interview.

Business papers of a wholesale liquor company in Portland, Oregon, including saloon orders (1862-1864) from mining camps and towns in eastern Oregon, Washington, and Idaho, which include news of the mines and business conditions in those areas. Also included are records and correspondence of the company's predecessor, Humiston and Ma'Dan (1859-1862).

Collection includes poclamation by Idaho Governor Silas D. Cochran, 1864; publication listing farms for sale in Idaho, circa 1900-1950; blank form from the King, Webb & Company assay office, Owyhee, Idaho, circa 1860; publication of the Northern Pacific Railroad, circa 1920-1950, extolling the virtues of settling in Washington and Idaho.