March 26, 1971
Episode 1 of Season 15 premiered on March 26, 1971
July 23, 1971
Episode 2 of Season 15 premiered on July 23, 1971
October 1, 1971
Episode 3 of Season 15 premiered on October 1, 1971
November 22, 1971
Episode 4 of Season 15 premiered on November 22, 1971
December 10, 1971
Episode 5 of Season 15 premiered on December 10, 1971