Season 1 ABC , 1955 - 1956 Season 2 ABC , 1956 - 1957 Season 3 ABC , 1957 - 1958 Season 4 ABC , 1959 - 1960 Season 5 ABC , 1960 - 1961 Season 6 ABC , 1961 - 1962 Season 7 ABC , 1962