Entered from booking ledger and New York Times concert listing and review. "CONCERT AND OPERA PROGRAMS OF THE WEEK." New York Times (1923-), Jan 17 1960, p. 1. ProQuest. Web. 25 May 2022. Briggs, John. "TRIO BY IVES HEARD ON PROGRAM HERE." New York Times (1923-), Jan 20 1960, p. 26. ProQuest. Web. 30 May 2022.