Collection includes boatbuilders' plans and correspondence.

The Celilo Bridge, also called the Oregon Trunk Rail Bridge, crosses the Columbia River just south of where Celilo Falls was located. Collection includes a general plan of the bridge and a typescript description of the bridge's construction with descriptions of photographic views.

Records include a scrapbook (1941-1945) kept by Arthur Bremner to document the history of Consolidated Freightways during World War II, and a scrapbook (1931-1971) kept by John Youell to document the history of the company. The records also include two loan applications (1941 and 1943) and correspondence (1997) referencing the history of Consolidated Freightways.

Records of the Convoy Company, an Oregon business originally established in 1930 as a subsidiary of Consolidated Truck Lines, which specialized in shipping automobiles by truck. The company became independent in 1941, and was sold in the early 1990s. The records in this collection include employee lists and directories, information booklets, promotional materials, company calendars, and a small quantity of correspondence.

Collection consists of papers of O. Edward Dagner, an automotive engineer and maintenance specialist of the Office of Defense Transportation, Portland district, 1942-1944. The papers include correspondence; truck operating cost estimates, particularly for logging truck costs in Oregon and California; and speeches, including radio broadcasts of the Office of Defense Transportation.

Ink and pencil line drawing depicting a side view of a Union Pacific locomotive. Above the drawing is the title "Modern 10-Wheel Locomotive used on the 'Overland Limited.' "

Collection consists of two scrapbook albums, membership lists, and correspondence created by members of the Historical Automobile Club of Oregon between approximately 1945 and 1950.

Typescript paper regarding the history of aviation in Oregon, with notes, research, bibliography, and interviews and information on early pilots: Ed Ball, Danny Grecco and Jimmie Rinehart.

Mimeograph typescript essay, "History of 'Old Number 3,'" by Herbert T. Williams, 10 pages, 1954, an account of the last horse-drawn streetcar and a history of horse-drawn streetcars in Portland, Oregon.

Photocopy typescript book and typescript carbon rough draft, with footnotes and appendix, regarding the history of the Willamette Valley and Cascade Mountain Wagon Road and the company that formed it, from approximately 1825 to 1940.