"Edgardo Sosa, Baritone" . . . . . . . . . . . . "New York Recital Debut\r\nEntered from booking ledger and New York Times concert listing and review. The correct program order is uncertain.\r\n\"Entertainment Events.\" New York Times (1923-), Jun 14 1968, p. 40. ProQuest. Web. 13 Jan. 2025.\r\nHughes, Allen. \"RECITAL DEBUT MADE BY SOSA, BARITONE.\" New York Times (1923-), Jun 15 1968, p. 38. ProQuest. Web. 13 Jan. 2025." . . "solo recital" . "1968-06-14T20:30:00"^^ .