All-Haydn Program Entered from booking ledger and New York Times concert listing and review. "Who Makes Music." New York Times (1923-), 16 Feb. 1969, p. 1. ProQuest. Web. 7 May 2025. Strongin, Theodore. "Wisconsin Visitors." New York Times (1923-), 21 Feb. 1969, p. 37. ProQuest. Web. 7 May 2025.