. "choir and orchestra performance" . . . . "Westchester Chamber Chorus and Orchestra" . "Entered from booking ledger and New York Times concert listing and review.\r\n\"Who Makes Music and Where.\" New York Times (1923-), 17 May 1970, p. 106. ProQuest. Web. 31 July 2025.\r\nStrongin, Thedore. \"JENS NYGAARD LEADS WEST CHESTER GROUP.\" New York Times (1923-), 22 May 1970, p. 39. ProQuest. Web. 4 Aug. 2025." . . . "1970-05-20T20:30:00"^^ . . . . .