The bulk of this subseries relates to Alfred H. Corbett's involvement with Adlai Stevenson's 1956 campaign for U.S. president, the Oregon branch of which Corbett co-chaired. These materials include correspondence with Stevenson and his staff, speeches by Stevenson, and two scrapbooks of newspaper clippings and ephemera. Most of the remaining material in the subseries consists of letters that Corbett wrote while training in mountain infantry during World War II, along with two photographs he sent with letters. Other materials in the subseries consist of a letter he wrote in 1940; materials relating to a 1964 conference about wilderness conservation that Corbett spoke at; and two items mailed to Corbett relating to land use and conservation issues.