January 28, 1972 • 55m
Episode 1 of Season 4 premiered on January 28, 1972
February 18, 1972 • 55m
Episode 2 of Season 4 premiered on February 18, 1972
March 10, 1972 • 55m
Episode 3 of Season 4 premiered on March 10, 1972
March 24, 1972 • 55m
Episode 4 of Season 4 premiered on March 24, 1972
April 21, 1972 • 55m
Episode 5 of Season 4 premiered on April 21, 1972
May 12, 1972 • 55m
Episode 6 of Season 4 premiered on May 12, 1972
June 2, 1972 • 55m
Episode 7 of Season 4 premiered on June 2, 1972
June 30, 1972 • 55m
Episode 8 of Season 4 premiered on June 30, 1972
October 6, 1972 • 55m
Episode 9 of Season 4 premiered on October 6, 1972
November 3, 1972 • 55m
Episode 10 of Season 4 premiered on November 3, 1972
November 24, 1972 • 55m
Episode 11 of Season 4 premiered on November 24, 1972
December 22, 1972 • 55m
Episode 12 of Season 4 premiered on December 22, 1972