September 6, 1972
Episode 3 of Season 12 premiered on September 6, 1972
November 11, 1972
Episode 6 of Season 12 premiered on November 11, 1972
September 12, 1973
Episode 7 of Season 12 premiered on September 12, 1973
September 13, 1972
Episode 8 of Season 12 premiered on September 13, 1972
September 14, 1973
Episode 9 of Season 12 premiered on September 14, 1973
September 15, 1972
Episode 10 of Season 12 premiered on September 15, 1972
September 19, 1972
Episode 12 of Season 12 premiered on September 19, 1972
September 25, 1972
Episode 16 of Season 12 premiered on September 25, 1972
September 29, 1972
Episode 20 of Season 12 premiered on September 29, 1972
October 9, 1972
Episode 26 of Season 12 premiered on October 9, 1972
October 10, 1972
Episode 27 of Season 12 premiered on October 10, 1972
October 12, 1972
Episode 29 of Season 12 premiered on October 12, 1972
October 31, 1972
Episode 42 of Season 12 premiered on October 31, 1972
November 27, 1972
Episode 61 of Season 12 premiered on November 27, 1972
November 28, 1972
Episode 62 of Season 12 premiered on November 28, 1972
November 29, 1972
Episode 63 of Season 12 premiered on November 29, 1972
November 30, 1972
Episode 64 of Season 12 premiered on November 30, 1972
December 1, 1972
Episode 65 of Season 12 premiered on December 1, 1972
December 13, 1972
Episode 73 of Season 12 premiered on December 13, 1972
December 20, 1972
Episode 78 of Season 12 premiered on December 20, 1972
January 2, 1973
Episode 87 of Season 12 premiered on January 2, 1973
January 5, 1973
Episode 90 of Season 12 premiered on January 5, 1973
January 8, 1973
Episode 91 of Season 12 premiered on January 8, 1973
January 10, 1973
Episode 93 of Season 12 premiered on January 10, 1973
January 29, 1973
Episode 106 of Season 12 premiered on January 29, 1973
January 30, 1973
Episode 107 of Season 12 premiered on January 30, 1973
January 31, 1973
Episode 108 of Season 12 premiered on January 31, 1973
February 1, 1973
Episode 109 of Season 12 premiered on February 1, 1973
February 2, 1973
Episode 110 of Season 12 premiered on February 2, 1973
February 9, 1973
Episode 115 of Season 12 premiered on February 9, 1973
February 15, 1973
Episode 119 of Season 12 premiered on February 15, 1973
March 19, 1973
Episode 141 of Season 12 premiered on March 19, 1973
March 20, 1973
Episode 142 of Season 12 premiered on March 20, 1973
March 21, 1973
Episode 143 of Season 12 premiered on March 21, 1973
March 22, 1973
Episode 144 of Season 12 premiered on March 22, 1973
March 23, 1973
Episode 145 of Season 12 premiered on March 23, 1973
March 29, 1973
Episode 149 of Season 12 premiered on March 29, 1973
April 5, 1973 • 1h
Episode 154 of Season 12 premiered on April 5, 1973
April 12, 1973
Episode 159 of Season 12 premiered on April 12, 1973
April 26, 1973 • 1h
Episode 170 of Season 12 premiered on April 26, 1973
April 30, 1973
Episode 171 of Season 12 premiered on April 30, 1973
May 1, 1973
Episode 172 of Season 12 premiered on May 1, 1973
May 2, 1973
Episode 173 of Season 12 premiered on May 2, 1973
May 3, 1973
Episode 174 of Season 12 premiered on May 3, 1973
May 4, 1973
Episode 175 of Season 12 premiered on May 4, 1973
May 21, 1973
Episode 186 of Season 12 premiered on May 21, 1973
May 22, 1973
Episode 187 of Season 12 premiered on May 22, 1973
May 23, 1973
Episode 188 of Season 12 premiered on May 23, 1973
May 24, 1973
Episode 189 of Season 12 premiered on May 24, 1973
May 25, 1973
Episode 190 of Season 12 premiered on May 25, 1973
May 28, 1973
Episode 191 of Season 12 premiered on May 28, 1973
June 1, 1973
Episode 195 of Season 12 premiered on June 1, 1973
June 4, 1973
Episode 196 of Season 12 premiered on June 4, 1973
June 7, 1973
Episode 199 of Season 12 premiered on June 7, 1973
July 4, 1973
Episode 218 of Season 12 premiered on July 4, 1973
July 5, 1973
Episode 219 of Season 12 premiered on July 5, 1973
July 6, 1973
Episode 220 of Season 12 premiered on July 6, 1973
July 11, 1973
Episode 223 of Season 12 premiered on July 11, 1973
July 12, 1973
Episode 224 of Season 12 premiered on July 12, 1973
July 26, 1973
Episode 229 of Season 12 premiered on July 26, 1973
July 30, 1973
Episode 231 of Season 12 premiered on July 30, 1973
July 31, 1973
Episode 232 of Season 12 premiered on July 31, 1973
August 1, 1973
Episode 233 of Season 12 premiered on August 1, 1973
August 2, 1973
Episode 234 of Season 12 premiered on August 2, 1973
August 3, 1973
Episode 235 of Season 12 premiered on August 3, 1973
August 17, 1973
Episode 240 of Season 12 premiered on August 17, 1973