. "Entered from booking ledger and New York Times concert listing and review.\r\n“Who Makes Music and Where.” New York Times [New York, N.Y., United States], 13 May 1973, p. 129. AL.\r\nHughes, Allen. “Barlow, Hurwitz, Teachers, Heard.” New York Times [New York, N.Y., United States], 27 May 1973, p. 36. GN." . "1973-05-23T20:00:00"^^ . . "Isaac Hurwitz, Violin, and Jon Barlow, Piano" . . . . "duo recital" . .