. . . "vocal performance" . . . . "Bessie Silberfeld age 12\r\nMamie Silberfeld age 7" . "Grand Benefit Concert for the Child Pianists Bessie and Mamie Silberfeld" . . . "1897-05-12T20:00:00"^^ . . . . . . . . "chamber music performance" . . . . . "benefit performance" . .