What year did Grace McDonald debut in a musical comedy about a group of Long Island teenagers based on a book?
Grace McDonald:  She and her brother Ray had their Broadway debut in 1937 in "Babes in Arms" as part of the dance team, and singing "I Wish I Were in Love Again". Babes in Arms: Babes in Arms is a 1937 musical comedy with music by Richard Rodgers, lyrics by Lorenz Hart and book by Rodgers and Hart.
i don't know