There is some uncertainty about what regularly-scheduled show this special preempted. The regularly scheduled shows for the evening of December 9, 1965 were My Three Sons, The Munsters and Gilligan's Island; however, current available information indicates that all three of these shows aired that night. A Charlie Brown Christmas aired at 7:30, which would have preempted The Munsters. Certain archives indicate that the special did not air at the same time in all markets. One possible explanation is that all three shows aired in different parts of the country, but they were not seen everywhere.