. . . . "NBC Symphony Orchestra" . . "Entered from program calendar and New York Times review.\r\n\"Toscanini Conducts Third N.B.C. Concert.\" New York Times (1923-Current file): 88. Nov 18 1951. ProQuest. Web. 8 Jan. 2014." . . . . "symphony orchestra performance" . "1951-11-17T18:30:00"^^ . "radio broadcast" . .