. . "Riverside Chamber Singers" . . . . . . . . . . . . . . . . . . . . . . "choir performance" . . "1961-02-02T20:30:00"^^ . . "Entered from booking ledger, New York Times concert listing and review, and 1/16/1961 Riverside Chamber Singers program. The review seems to indicate that this concert repeated the program from 1/16/1961; no indication could be found that the earlier performance was cancelled or postponed.\r\n\"CONCERT AND OPERA PROGRAMS THIS WEEK.\" New York Times (1923-), Jan 29 1961, p. 1. ProQuest. Web. 12 Sep. 2022.\r\nEricson, Raymond. \"Music: Chamber Singers: Riverside Ensemble Gives A Cappella Program in Carnegie Recital Hall.\" New York Times (1923-), Feb 03 1961, p. 16. ProQuest. Web. 13 Sep. 2022." . .