Entered from booking ledger and New York Times concert listing and review. The review indicates that some of the performance was accompanied by instrumentalists, but does not identify them by name. "Who Makes Music and Where." New York Times (1923-), 08 Dec. 1968, p. 169. ProQuest. Web. 3 Apr. 2025. "SINE NOMINE OFFERS A SPRIGHTLY RECITAL." New York Times (1923-), 09 Dec. 1968, p. 64. ProQuest. Web. 4 Apr. 2025.