Collection includes memoranda, correspondence, speeches, reports, policy statements and pamphlets covering the creation of the network, its growth in the field of radio and its subsequent expansion into television broadcasting. The materials span 1922-1986, but most date from the mid-1920s through the late 1940s. Additional files include: Topical folders, 1922-1986 (649 folders); Advertisers, 1927-1961 (38 folders); Personnel and organizations, 1926-1980 (88 folders); Committees, councils, and internal organizations, 1923-1973 (122 folders); Board of directors, 1926-1956 (100 folders); Network affiliates, 1923-1983 (44 folders); General reports, 1930-1936 (67 folders); Annual reports, 1932-1959 (6 folders); Programs, subject lists, schedules, samples, 1931-1972 (126 folders); Speeches, 1923-1990 (63 folders); Programs, schedules, transcripts, and masterbooks, 1922-1979 (28 folders); Election news, 1962-1988 (55 folders); Consultant reports, 1947-1957 (14 folders); Pamphlets (566 folders)