Carousel (1945), with music by Richard Rodgers and the book and lyrics by Oscar Hammerstein II, was their second collaboration following the surprising success of Oklahoma (1943). They worked again with Theresa Helburn and Lawrence Langner of the Theatre Guild (producers), Rouben Mamoulian (director), and Agnes de Mille (choreographer). But with Oklahoma still running to sell-out houses, they needed to do something quite different. Based...