The Kahan Mandolin Quartet Entered from booking ledger and New York Times concert listing. The ledger indicates (in pencil) a curtain time of 3:00 PM, while the listing indicates 2:30 PM. "Who Makes Music and Where." New York Times (1923-), 11 Jan. 1970, p. 98. ProQuest. Web. 25 June 2025. chamber music performance 1970-01-11T14:30:00