The collection consists of catalogs, programs, and a small quantity of promotional material for the Portland International Livestock Exposition. These materials include catalogs and programs for shows that were part of or held in conjunction with the exposition, such as the dairy products show, horse show, 4-H Club contests, the Manufacturers' and Land Products Show, the Oregon Poultry and Pet Stock Association exhibition, and the Pacific International Kennel Club show. Materials are most complete for the years 1919 to 1940, with scattered items only for the 1950s and 1960s. Also included is a small amount of other material associated with the exposition, including stock certificates, stockholder information, and other documents.