January 14, 1968 • 35m
Episode 1 of Season 4 premiered on January 14, 1968
February 11, 1968 • 35m
Episode 2 of Season 4 premiered on February 11, 1968
February 21, 1968 • 35m
Episode 3 of Season 4 premiered on February 21, 1968
March 10, 1968 • 35m
Episode 4 of Season 4 premiered on March 10, 1968
March 20, 1968 • 35m
Episode 5 of Season 4 premiered on March 20, 1968
April 14, 1968 • 35m
Episode 6 of Season 4 premiered on April 14, 1968
May 12, 1968 • 35m
Episode 7 of Season 4 premiered on May 12, 1968
July 14, 1968 • 35m
Episode 8 of Season 4 premiered on July 14, 1968
October 18, 1968 • 35m
Episode 9 of Season 4 premiered on October 18, 1968
November 22, 1968 • 35m
Episode 10 of Season 4 premiered on November 22, 1968
December 20, 1968 • 35m
Episode 11 of Season 4 premiered on December 20, 1968