January 4, 1971 • 24m
Episode 1 of Season 12 premiered on January 4, 1971
February 24, 1971
Episode 16 of Season 12 premiered on February 24, 1971
March 29, 1971
Episode 25 of Season 12 premiered on March 29, 1971
March 31, 1971
Episode 26 of Season 12 premiered on March 31, 1971
June 30, 1971
Episode 52 of Season 12 premiered on June 30, 1971
December 29, 1971 • 24m
Episode 104 of Season 12 premiered on December 29, 1971