. . . "1958-03-16T17:30:00"^^ . "Entered from booking ledger; flyer, and New York Times concert listing and review.\r\n\"CONCERT AND OPERA PROGRAMS OF THE WEEK.\" New York Times (1923-), Mar 16 1958, p. 1. ProQuest. Web. 29 Oct. 2021.\r\n\"KOECKERT QUARTET MAKES DEBUT HERE.\" New York Times (1923-), Mar 17 1958, p. 20. ProQuest. Web. 29 Oct. 2021." . "Koeckert Quartet" . "chamber music performance" . . . .