March 22, 1959
Episode 1 of Season 12 premiered on March 22, 1959
April 12, 1959
Episode 2 of Season 12 premiered on April 12, 1959
April 26, 1959
Episode 3 of Season 12 premiered on April 26, 1959
May 3, 1959
Episode 4 of Season 12 premiered on May 3, 1959
May 17, 1959
Episode 5 of Season 12 premiered on May 17, 1959
October 4, 1959
Episode 6 of Season 12 premiered on October 4, 1959