The Lennon Sisters with Lawrence Welk in the background

The Lennon Sisters quartet, consisting of four of the six sisters from a family of 
11, made its television debut on ABC’s The Lawrence Welk Show on Christmas
Eve – December 24, 1955. A high school classmate, Larry Welk, son of band
leader Lawrence Welk, brought them to the attention of his father. Welk was
at home, sick in bed, when his son brought the sisters in to sing for him. Mr.
Welk was so impressed that he immediately booked them for that week’s show
and they were a mainstay until they left to start a career of their own in 1968.