. "NBC Symphony Orchestra" . . . . . . . "symphony orchestra performance" . . "radio broadcast" . "Entered from from program calendar and New York Times review.\r\n\"Toscanini Conducts 'Enigma' Variations.\" New York Times (1923-Current file): 80. Jan 06 1952. ProQuest. Web. 28 Jan. 2014." . "1952-01-05T18:30:00"^^ . . .