Season 1

September 12, 1972 | 22 Episodes

Season 2

September 11, 1973 | 24 Episodes

Season 3

September 9, 1974 | 23 Episodes

Season 4

September 8, 1975 | 24 Episodes

Season 5

September 20, 1976 | 24 Episodes

Season 6

September 12, 1977 | 24 Episodes