All Available Season All Season Season 1 May, 1971 10 episodes 0.0 Season 2 May, 1972 10 episodes 0.0 Season 3 Jun, 1973 10 episodes 0.0 Season 4 May, 1974 5 episodes 0.0 Season 5 Apr, 1975 6 episodes 0.0 Season 6 Jan, 1976 6 episodes 0.0
