. "Entered from booking ledger and New York Times concert listing.\r\n\"CONCERT AND OPERA PROGRAMS OF THE WEEK.\" New York Times (1923-), Apr 03 1960, p. 1. ProQuest. Web. 3 Aug. 2022." . . . . . . "duo recital" . . "1960-04-09T14:30:00"^^ . "Ma Si-Hon, Violin, and Tung Kwong-Kwong, Piano" .