Season 1 Syndication , 1952 - 1953 Season 2 Syndication , 1953 - 1959 Season 3 Syndication , 1954 - 1955 Season 4 Syndication , 1955 - 1956 Season 5 Syndication , 1956 - 1957 Season 6 Syndication , 1957 - 1958 Season 7 Syndication , 1957 - 1959 Season 8 Syndication , 1959 - 1960 Season 9 Syndication , 1960 - 1961 Season 10 Syndication , 1961 - 1962 Season 11 Syndication , 1962 - 1963 Season 12 Syndication , 1963 - 1968 Season 13 Syndication , 1964 - 1965 Season 14 Syndication , 1965 - 1966 Season 15 Syndication , 1966 - 1967 Season 16 Syndication , 1967 - 1968 Season 17 Syndication , 1968 - 1969 Season 18 Syndication , 1969 - 1970