All Available Season All Season Specials Dec, 1971 1 episodes 0.0 Season 1 Feb, 1971 12 episodes 0.0 Season 2 Feb, 1972 12 episodes 0.0 Season 3 Jan, 1973 12 episodes 0.0 Season 4 Feb, 1974 7 episodes 0.0 Season 5 Oct, 1974 10 episodes 0.0 Season 6 Jan, 1976 13 episodes 0.0