Entered from booking ledger and New York Times concert listing and review. "Who Makes Music and Where." New York Times (1923-), 09 May 1971, p. 1. ProQuest. Web. 23 Sept. 2025. Davis, Peter G. "Zeitlin Plays Sonatas in Recorder Recital." New York Times (1923-), 17 May 1971, p. 42. ProQuest. Web. 24 Sept. 2025.