Entered from booking ledger and New York Times concert listing and review. "CONCERT AND OPERA PROGRAMS THIS WEEK." New York Times (1923-), Apr 09 1961, p. 1. ProQuest. Web. 28 Sep. 2022. "PIANO RECITAL GIVEN BY DILWORTH-LESLIE." New York Times (1923-), Apr 10 1961, p. 26. ProQuest. Web. 28 Sep. 2022.