New York Debut Entered from booking ledger and New York Times concert listing and review. U.S. PREMIERE of Guido Guerrini's CANTI DELLA MIA PRIGIONIA "CONCERT AND OPERA PROGRAMS FOR THE WEEK." New York Times (1923-Current file), Apr 21 1957, p. 102. ProQuest. Web. 26 July 2021. "DEBUT RECITAL SUNG BY MARY MALTAISE." New York Times (1923-Current file), Apr 22 1957, p. 29. ProQuest. Web. 26 July 2021.