. . . . . . . "According to the New York Times (April 18, 1915, pg. 16), Alma Gluck, originally scheduled to appear, was unable to perform due to illness. Josef Hofmann and Efrem Zimbalist performed additional selections to fill her sections of the program (entered from Times review, as were encores)." . . . . . "Benefit: American-Polish Relief Fund" . . . . . . . . . . . . . "benefit performance" . "1915-04-17T14:30:00"^^ . . . . "multiple performances" . . . . . .