The other broadcasts mostly imported sports like baseball, basketball, hockey and American football.
Complaints about two other broadcasts, of the Billboard Music Awards on the Fox network, eventually led to the case the justices accepted Monday.
There would be no reason not to bring back Kaat and Singleton, but Al Trautwig's future would be uncertain because he is on MSG's other broadcasts.
Unwin became Uncle Stan on the radio programme Children's Hour and did what he called "short bursts" on other broadcasts, as well as public dinners and variety shows.
But for the next 40 years it sat forgotten in the basement archives the network shared with the Swedish Radio Corporation, along with other broadcasts about the movement produced around that time.
But among other broadcasts, officials were said by some to have been angered by an English-language documentary on Chinese re-education through labor camps that Al Jazeera produced outside China and broadcast on its network in November.
