. . . "Entered from booking ledger and New York Times concert listing and review. The exact program order is uncertain.\r\n\"Who Makes Music and Where: METROPOLITAN OTHER EVENTS.\" New York Times (1923-), Dec 03 1967, p. 191. ProQuest. Web. 10 June 2022.\r\n\"LEO RIVERA OFFERS A GUITAR RECITAL.\" New York Times (1923-), Dec 10 1967, p. 83. ProQuest. Web. 10 June 2022." . "Leo Rivera, Guitar" . . . . . . "1967-12-08T20:30:00"^^ . "solo recital" . . . .