. "Entered from booking ledger and New York Times concert listing and review. The individual musicians, other than Leonardo Balada, are not identified.\r\n\"Who Makes Music and Where.\" New York Times (1923-), May 26 1968, p. 1. ProQuest. Web. 9 Jan. 2025.\r\nHughes, Allen. \"SPANISH INSTITUTE OFFERS A CONCERT.\" New York Times (1923-), May 29 1968, p. 28. ProQuest. Web. 9 Jan. 2025." . . . . "chamber music performance" . . . "1968-05-28T20:30:00"^^ . . . . "Concert of Contemporary Spanish Music" . . . .