The papers of the Republican Campaign Collection span the years 1902-1926 and consist of correspondence, financial papers, notes, reports, charts, photographs, lists and rosters, printed matter, and miscellaneous items. The bulk of the correspondence relates to the presidential campaigns of William H. Taft, 1912, and Charles Evans Hughes, 1916, and the congressional campaigns of William Brown McKinley, member of the House of Representatives from Illinois, 1905-1913 and 1915-1921. There are many letters to McKinley, who served as chairman of the Republican Congressional Committee in 1910, director of Taft's 1912 presidential campaign, and chairman of the Finance Committee of the National Republican Congressional Committee in 1916. The collection also contains files from McKinley's congressional office. The majority of the correspondence, however, consists of letters between McKinley's assistant, John C. Eversman, and members of the Republican party and the general public. The papers indicate that Eversman also served as secretary of the National Republican Congressional Committee, 1913-1916.