. "Entered from program calendars, booking ledger, and New York Times concert listing and review.\r\n\"CONCERT AND OPERA PROGRAMS.\" New York Times (1923-Current file), Dec 17 1961, p. 1. ProQuest. Web. 30 Oct. 2019.\r\nEricson, Raymond. \"CANTICUM MUSICUM GIVES BACH CONCERT.\" New York Times (1923-Current file), Dec 21 1961, p. 33. ProQuest. Web. 6 Nov. 2019" . . . . . "1961-12-20T20:30:00"^^ . . . "Canticum Musicum" . . "chamber orchestra performance" . .