Oral history interview with Agnes Barchus conducted by Karen A. Reyes on March 3, 1980. Barchus was the first woman minutes clerk in the Oregon Legislature and the daughter of Oregon artist Eliza R. Barchus. She discusses her mother's art career and her memories of the 1905 Lewis and Clark Exposition in Portland.

Black and white photographs and negatives of the 1905 Lewis and Clark Exposition in Portland, Oregon, primarily depicting buildings and statuary.

Postmarked envelopes, postcards, correspondence, and other materials collected by William Wallace Bilyeu (1923-2015), primarily relating to philately. Bilyeu was a dentist who held a lifelong passion for philately.

Collection consists of 12 black and white photographs, primarily of buildings and grounds at he 1905 Lewis and Clark Exposition in Portland, Oregon, as well as a few images of unidentified visitors to the exposition.

The collection contains the papers of Henry Ernst Dosch, primarily relating to the various expositions in which he participated. Materials include Dosch's citizenship application; correspondence and travel expenses; tickets for and certificates from various expositions; photograph albums; exposition publications; and a scrapbook.

Collection consists of 1 drawing on 1 sheet of the Forestry Building for the 1905 Lewis and Clark Centennial Exposition in Portland, Oregon. The building was described as the world's largest log cabin or the Timber Temple. It was constructed of unhewn logs, the largest of which were 54 feet long and five feet wide, and inside were exhibits of wildlife dioramas and Oregon forest products.

Album containing black and white photographs of personnel, buildings, grounds, and events at the 1905 Lewis and Clark Centennial Exposition in Portland, Oregon. The album belonged to William Russell MacKenzie, auditor of the exposition.

This collection of 14 snapshots by an unidentified photographer gives a brief tourist-eye-view of a visit to the Lewis and Clark Exposition in Portland, Oregon, in 1905. The photographs primarily depict buildings at the exposition, but also include one snapshot of the Cedar River at Renton, Washington. The photographs are glued to seven album pages that appear to have been removed from a larger album.

Typescript transcript of the diary, 1905-1906, of Oregon pioneer Ezra Meeker, relating to travels in Oregon and to the Lewis and Clark Exposition in Portland.

Oral history interview with Clara May Patterson conducted by Ruth Kinon and Mary Cowan on June 11, 1980. Patterson performed with a choir at the Lewis and Clark Exposition in Portland, Oregon, in 1905.