. . . . "Margaret Baetz, Soprano" . . . . . "solo recital" . . . "Entered from booking ledger and New York Times concert listing and review.\r\n\"CONCERT AND OPERA PROGRAMS FOR THE WEEK.\" New York Times (1923-Current file), Mar 10 1957, p. 1. ProQuest. Web. 17 May 2021.\r\n\"Margaret Baetz Offers Recital.\" New York Times (1923-Current file), Mar 12 1957, p. 39. ProQuest. Web. 17 May 2021." . . . . . . . . "1957-03-11T20:30:00"^^ . . . . .