All Available Season All Season Specials Jan, 1972 2 episodes 0.0 Season 1 Jan, 1972 11 episodes 10.0 Season 2 Sep, 1972 21 episodes 0.0 Season 3 Sep, 1973 22 episodes 0.0 Season 4 Sep, 1974 22 episodes 0.0 Season 5 Sep, 1975 22 episodes 0.0 Season 6 Sep, 1976 24 episodes 0.0 Season 7 Jan, 1978 6 episodes 0.0
