All Available Season All Season Season 1 Aug, 1972 40 episodes 0.0 Season 2 Sep, 1973 50 episodes 0.0 Season 3 Sep, 1974 33 episodes 0.0 Season 4 Jan, 0001 14 episodes 0.0 Season 5 Jun, 1977 8 episodes 0.0 Season 6 Jan, 0001 5 episodes 0.0 Season 7 Jan, 1979 3 episodes 0.0 Season 8 Jan, 0001 4 episodes 0.0
