Entered from booking ledger and New York Times concert listing and review.
"CONCERT AND OPERA PROGRAMS OF THE WEEK." New York Times (1923-Current file), Apr 12 1959, p. 1. ProQuest. Web. 29 July 2020.
"Musical Dialogues' Offered." New York Times (1923-Current file), Apr 13 1959, p. 36. ProQuest. Web. 29 July 2020.