U.S. Debut Entered from booking ledger and New York Times concert listing and review. "THIS WEEK'S CONCERT AND OPERA PROGRAMS." New York Times (1923-), Apr 26 1964, p. 1. ProQuest. Web. 16 Nov. 2023. "Miss Horenstein-Sametnik." New York Times (1923-), Apr 27 1964, p. 25. ProQuest. Web. 16 Nov. 2023.