Entered from booking ledger and New York Times concert listing and review. "Who Makes Music." New York Times (1923-), Oct 06 1968, p. 1. ProQuest. Web. 3 Feb. 2025. Ericson, Raymond. "SONG RECITAL GIVEN BY BARBARA GOMBOS." New York Times (1923-), Oct 11 1968, p. 42. ProQuest. Web. 3 Feb. 2025.