Who were the female singers on the Lawrence Welk show?

There were many singers both female and male. Wikipaedia gives a full list of performers on the show
https://en.wikipedia.org/wiki/The_Lawrence_Welk_Show

More details about the female performers can be found at
http://www.welkmusicalfamily.com/welkgirls.html

Perhaps the most famous were the Lennon Sisters who sang on the show between 1955 and 1968.
http://www.welkmusicalfamily.com/thelennons.html

Additionally ... Norma Simmer had a 22 year tenure on the show from 1960 to 1982. She usually performed one solo and one duet per show. She often danced with welk on the closing credits.
https://en.wikipedia.org/wiki/Norma_Zimmer