September 9, 1968
Episode 1 of Season 4 premiered on September 9, 1968
September 16, 1968
Episode 2 of Season 4 premiered on September 16, 1968
September 23, 1968
Episode 3 of Season 4 premiered on September 23, 1968
September 30, 1968
Episode 4 of Season 4 premiered on September 30, 1968
October 7, 1968
Episode 5 of Season 4 premiered on October 7, 1968
October 14, 1968
Episode 6 of Season 4 premiered on October 14, 1968
October 21, 1968
Episode 7 of Season 4 premiered on October 21, 1968
November 4, 1968
Episode 8 of Season 4 premiered on November 4, 1968
November 11, 1968
Episode 9 of Season 4 premiered on November 11, 1968
November 18, 1968
Episode 10 of Season 4 premiered on November 18, 1968
November 25, 1968
Episode 11 of Season 4 premiered on November 25, 1968
December 2, 1968
Episode 12 of Season 4 premiered on December 2, 1968
December 9, 1968
Episode 13 of Season 4 premiered on December 9, 1968
December 16, 1968
Episode 14 of Season 4 premiered on December 16, 1968
December 23, 1968
Episode 15 of Season 4 premiered on December 23, 1968
December 30, 1968
Episode 16 of Season 4 premiered on December 30, 1968
January 6, 1969
Episode 17 of Season 4 premiered on January 6, 1969
January 13, 1969
Episode 18 of Season 4 premiered on January 13, 1969
January 20, 1969
Episode 19 of Season 4 premiered on January 20, 1969
January 27, 1969
Episode 20 of Season 4 premiered on January 27, 1969
February 3, 1969
Episode 21 of Season 4 premiered on February 3, 1969
February 13, 1969
Episode 22 of Season 4 premiered on February 13, 1969
February 20, 1969
Episode 23 of Season 4 premiered on February 20, 1969
February 27, 1969
Episode 24 of Season 4 premiered on February 27, 1969
March 6, 1969
Episode 25 of Season 4 premiered on March 6, 1969
March 20, 1969
Episode 26 of Season 4 premiered on March 20, 1969
March 20, 1969
Episode 27 of Season 4 premiered on March 20, 1969
March 27, 1969
Episode 28 of Season 4 premiered on March 27, 1969
April 3, 1969
Episode 29 of Season 4 premiered on April 3, 1969
April 10, 1969
Episode 30 of Season 4 premiered on April 10, 1969
April 24, 1969
Episode 31 of Season 4 premiered on April 24, 1969
May 1, 1969
Episode 32 of Season 4 premiered on May 1, 1969
May 8, 1969
Episode 33 of Season 4 premiered on May 8, 1969
May 15, 1969
Episode 34 of Season 4 premiered on May 15, 1969
May 22, 1969
Episode 35 of Season 4 premiered on May 22, 1969
May 29, 1969
Episode 36 of Season 4 premiered on May 29, 1969