Where did Elvis Presley make his TV debut?

Elvis Presley did not make his TV debut on “The Ed Sullivan Show” (CBS, 1948-71), but on “The Jackie Gleason Show” (CBS, 1952-55, 1956-57, 1962-70).

Elvis first appeared there in January 1956.

Who played Bud Abbott and Lou Costello in the TV movie “Bud and Lou” about the duo? Harvey Korman played Bud and Buddy Hackett played Lou in the TV movie "Bud and Lou" (1978).
In the 1956 movie of the same name what was the Forbidden Planet? The Forbidden Planet was called Altair IV.
Who played Elvis Presley in the TV movie “Elvis” (1979)? Kurt Russell, with songs dubbed by Ronnie McDowell, played Elvis Presley in the TV movie "Elvis" (1979). The film was directed by John Carpenter.
Who adopted the word “cameo” as a cinematic term for walk-on parts for well-known people? Producer Michael Todd, who filled Around the World in 80 Days (1956) with forty-four cameo stars, adopted the word "cameo" as a cinematic term for walk-on parts for well-known people.
In what year did NBC begin regular television transmission to the American public? NBC began regular television transmission to the American public in 1939.
What part did Marlon Brando play in “Roots: The Next Generation” (ABC, 1977)? Marlon Brando played American Nazi leader George Lincoln Rockwell in "Roots: The Next Generation" (ABC, 1977).