. "Entered from booking ledger and New York Times concert listing and review.\r\n\"PROGRAMS OF THE CURRENT WEEK.\" New York Times (1923-Current file), May 27 1956, p. 100. ProQuest. Web. 25 Mar. 2021.\r\n\"Federation Choral in Concert.\" New York Times (1923-Current file), May 29 1956, p. 30. ProQuest. Web. 26 Mar. 2021." . . "choir performance" . . "1956-05-28T20:30:00"^^ . . . . "Federation Chorale of New York" . . . .