All-Brahms Program Entered from booking ledger and New York Times concert listing and review. "OPERA AND CONCERT PROGRAMS." New York Times (1923-), Feb 09 1964, p. 1. ProQuest. Web. 3 Nov. 2023. "Ruben Varga Plays Brahms." New York Times (1923-), Feb 17 1964, p. 24. ProQuest. Web. 3 Nov. 2023.