All Available Season All Season Season 1 Feb, 1971 41 episodes 0.0 Season 2 Jan, 1972 43 episodes 0.0 Season 3 Jan, 1973 47 episodes 0.0 Season 4 Jan, 0001 42 episodes 0.0 Season 5 Jan, 1975 40 episodes 0.0 Season 6 Jan, 1976 16 episodes 0.0