Entered from program calendar and New York Times concert listing and review. "Concert and Opera Programs of the Week." New York Times (1923-Current file): 1. Feb 03 1952. ProQuest. Web. 10 Feb. 2014. "Donald Blackey, Tenor Bows." New York Times (1923-Current file): 24. Feb 06 1952. ProQuest. Web. 10 Feb. 2014.