U.S. Debut Eduardo Guardarrama was 17 years old at the time of this recital. Entered from booking ledger and New York Times concert listing and review. The correct program order is uncertain. "Who Makes Music and Where." New York Times (1923-), Oct 01 1967, p. 125. ProQuest. Web. 25 Oct. 2024. "Eduardo Guardarramas, 17, Gives First U.S. Piano Recital." New York Times (1923-), Oct 02 1967, p. 54. ProQuest. Web. 25 Oct. 2024.