All Available Season All Season Specials Jan, 0001 1 episodes 0.0 Season 1 Mar, 1973 23 episodes 0.0 Season 2 Sep, 1974 22 episodes 0.0 Season 3 Sep, 1975 22 episodes 10.0 Season 4 Sep, 1976 22 episodes 0.0 Season 5 Sep, 1977 10 episodes 0.0 Season 6 Oct, 1988 5 episodes 0.0
