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. Mar 30 1952. ProQuest. Web. 4 Mar. 2014. "Bradley, Belbas in Program." New York Times (1923-Current file): 38. Apr 02 1952. ProQuest. Web. 4 Mar. 2014.