Season 1

October 15, 1971 | 15 Episodes

Season 2

September 17, 1972 | 14 Episodes

Season 3

October 21, 1973 | 13 Episodes

Season 4

April 25, 1976 | 10 Episodes

Season 5

June 26, 1977 | 10 Episodes

Season 6

July 16, 1978 | 10 Episodes

Season 7

July 22, 1979 | 10 Episodes

Season 8

August 31, 1980 | 9 Episodes