Entered from booking ledger and New York Times concert listing and review. The accompanist is not identified. "CONCERT AND OPERA PROGRAMS OF THE WEEK." New York Times (1923-Current file), Oct 19 1958, p. 1. ProQuest. Web. 29 May 2020. "EMANUEL MARTIN HEARD: BARITONE MAKES LOCAL DEBUT AT CARNEGIE RECITAL HALL." New York Times (1923-Current file), Oct 20 1958, p. 34. ProQuest. Web. 29 May 2020.