Thirteen Episodes Of The Series Are Lost
Over six seasons, 203 episodes of Father Knows Best officially aired. However, fans have theorized that thirteen more episodes have disappeared over time. Two were originals, and eleven were “flashbacks” that the producers may have cut because they didn’t work as reruns.
At least one of these episodes was substituted in the DVD release. The flashback episode “Margaret Goes Dancing” with 3-4 minutes of new material did not appear in the DVD set. On the other hand, the DVD sets included 187 episodes of uncut footage that ran a full 26 minutes.