Entered from booking ledger and New York Times concert listing and review. Only those performers noted here are identified in the review. "CONCERT AND OPERA PROGRAMS FOR THE WEEK." New York Times (1923-Current file), May 06 1956, p. 136. ProQuest. Web. 22 Mar. 2021. Parmenter, Ross. "Music: End of a Series: Chamber Circle Closes Season with Fine Performances of Rarely Heard Works." New York Times (1923-Current file), May 07 1956, p. 32. ProQuest. Web. 22 Mar. 2021.