Entered from booking ledger and New York Times concert listing and review. According to the review, Ruth Rubin, who performed unaccompanied, gave a recital and talk on Yiddish songs.
"Who Makes Music and Where." New York Times (1923-), Apr 14 1968, p. 1. ProQuest. Web. 9 Dec. 2024.
Shelton, Robert. "Ruth Rubin Gives a Recital and Talk on Yiddish Songs." New York Times (1923-), Apr 22 1968, p. 58. ProQuest. Web. 10 Dec. 2024.