. . . "Maria Schacko, Soprano" . . "Entered from New York Times concert listing and review, and from a copy of the concert program held by the State Office for Citizen Affairs and Public Order, Berlin, Germany.\r\n\"PROGRAMS OF THE WEEK: METROPOLITAN OPERA CONCERTS AND RECITALS FREE CONCERTS BY WPA.\" New York Times (1923-), Dec 01 1940, p. 1. ProQuest. Web. 17 Aug. 2022.\r\n\"Mario Shacko in Recital.\" New York Times (1923-), Dec 05 1940, p. 32. ProQuest. Web. 17 Aug. 2022.\r\nRecital Program, \"Maria Shako, Carnegie Chamber Music Hall, Wednesday, December 4, 1940, 8.30 pm\", Foliation-E13, in: file of compensation, Registry Number-Berlin 221 596, Office for Compensation/Entschädigungsbehörde, State Office for Citizen Affairs and Public Order/Landesamt für Bürger- und Ordnungsangelegenheiten, Berlin, Germany." . . . "1940-12-04T20:30:00"^^ . . . . . . . . . "solo recital" . . . . . . . . . . . . . . . . .