Entered from New York Times concert listing and review. "CONCERT AND OPERA PROGRAMS FOR THE WEEK." New York Times (1923-Current file), Apr 07 1957, p. 138. ProQuest. Web. 20 July 2021. "SONATA BY CARTER HEARD IN CONCERT." New York Times (1923-Current file), Apr 08 1957, p. 19. ProQuest. Web. 20 July 2021.