Entered from booking ledger and New York Times concert listing and review. "CONCERT AND OPERA PROGRAMS OF THE WEEK." New York Times (1923-), Feb 21 1960, p. 1. ProQuest. Web. 7 June 2022. Schonberg, Harold C. "RECITAL IS GIVEN BY KAREN TUTTLE: VIOLIST PLAYS HINDEMITH, BACH AND VAUGHAN WILLIAMS AT CARNEGIE RECITAL HALL." New York Times (1923-), Feb 28 1960, p. 78. ProQuest. Web. 8 June 2022.