. . . "Isobel Walters, Soprano" . . . . . . "Entered from booking ledger and New York Times concert listing and review.\r\n\"PROGRAMS OF THE WEEK.\" New York Times (1923-Current file), May 26 1957, p. 1. ProQuest. Web. 25 Aug. 2021.\r\n\"ISOBEL WALTERS SINGS: SOPRANO DISPLAYS POISE AND ASSURANCE AT RECITAL.\" New York Times (1923-Current file), May 29 1957, p. 25. ProQuest. Web. 30 Aug. 2021." . . . . . "1957-05-28T20:15:00"^^ . . . .