Entered from booking leder and New York Times concert listing and review. The review indicates that this group had just changed their name from Collegium Musicum to Chamber Music Circle. Individual members of the group, besides flutist Samuel Baron and double-bassist Julius Levine, are not identified. "CONCERT AND OPERA 'PROGRAMS FOR THE WEEK." New York Times (1923-Current file), Oct 30 1955, p. 1. ProQuest. Web. 24 Sep. 2020. "Collegium Musicum Under New Name." New York Times (1923-Current file), Oct 31 1955, p. 31. ProQuest. Web. 24 Sep. 2020.