"Entered from program calendar and New York Times review.\r\n\"Toscanini Conducts Beethoven Septet.\" New York Times (1923-Current file): 81. Nov 25 1951. ProQuest. Web. 8 Jan. 2014." . . . "symphony orchestra performance" . "NBC Symphony Orchestra" . . . . . . . "radio broadcast" . "1951-11-24T18:30:00"^^ . .