"It's just so shocking to me that they aren't credited for writing the book, along with Dante, etc. It is THEIR words."
They didn't write the book. They talked into a tape recorder while sitting together in a room and told personal stories. There was nothing "literary" about their contributions that would constitute the "book writing" of a musical. Their free-form speech was source material for an author, not "final product" for anything.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22