I can still picture Carol Burnett performing "The Trolly Song" as in, "Clang, clang, clang! Went the trolly. Ring, ring, ring! Went the bell".
Her rendition was such a hit that I believe they did it more than once.

Let's not forget Vicki Laurence:

During her senior year of high school Vicki sent Carol Burnett a letter which included a local newspaper article mentioning their resemblance. Vicki invited Ms. Burnett to the local fire department's "Miss Fireball Contest" in which she was performing. Ms. Burnett, looking for an actress to play her kid sister on her new variety series, contacted Vicki and made arrangements to come to the event. The rest is television history. "The Carol Burnett Show" premiered in the fall of 1967; the same year Vicki entered UCLA to study Theater Arts. She spent eleven years with Carol, earning one Emmy Award and five Emmy nominations. In 1995 Simon and Schuster published her story. Her autobiography is entitled "Vicki!: The True Life Adventures of Miss Fireball".

It is possible that this autobiography might have a little tidbit or two about Ken Carson.

Oddly, I only remember Ken with regard to his time in the Sons of the Pioneers.