. . "Title: Concert of Contemporary Music for Piano and Flute\r\nEntered from booking ledger and New York Times concert listing and review.\r\n\"Opera and Concert Programs.\" New York Times (1923-), Nov 08 1964, p. 1. ProQuest. Web. 29 Jan. 2024.\r\nStrongin, Theodore. \"SOPHIE SOLLBERGER PLAYS FLUTE WORKS.\" New York Times (1923-), Nov 10 1964, p. 57. ProQuest. Web. 29 Jan. 2024." . "1964-11-09T20:30:00"^^ . . "solo recital" . . . . . . . "Sophie Sollberger, Flute" .