Ola Delight Cook (1880-1958) was a railroad telegrapher, charter member of Commercial Telegraphers Union, worker for the American Federation of Labor, and an honorary trustee of Portland Central Labor Council. Collection includes correspondence, constitutions, financial reports and minutes relating to railroad unions, the AFL, the Portland Labor Temple and the YWCA, 1953-1958, Oregon political campaigns, 1948-1958, and Central Labor Council; diaries, 1914-1955; and ledger.