Entered from booking ledger and New York Times concert listing and review. "CONCERT AND OPERA PROGRAMS OF. THE.WEEK." New York Times (1923-), Mar 02 1958, p. 1. ProQuest. Web. 26 Oct. 2021. "Helen Hunter, Soprano, Presents Program at Carnegie Recital Hall." New York Times (1923-), Mar 05 1958, p. 38. ProQuest. Web. 26 Oct. 2021.