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), Feb 08 1959, p. 1. ProQuest. Web. 15 June 2020. Salzman, Eric. "SONG PROGRAM GIVEN BY NANCY WILLIAMS." New York Times (1923-Current file), Feb 15 1959, p. 82. ProQuest. Web. 17 June 2020.