Season 1 ABC , 1964 Season 2 ABC , 1964 - 1965 Season 3 ABC , 1965 - 1966 Season 4 ABC , 1966 - 1967 Season 5 ABC , 1967 - 1968 Season 6 ABC , 1968 - 1969 Season 7 ABC , 1969 - 1970