. "Entered from booking ledger and New York Times concert listing and review. In addition to the composers listed here, the program also included flamenco selections. The \"mixed media\" of the concert listing presumably refers to the participation of actor Byron Warner Jr., who, according to the review, \"served as tormentor and downgrader throughout much of the evening. He called Mr. Williams [sic] an imposter, an incompetent, and other unflattering things.\"\r\n\"Who Makes Music.\" New York Times (1923-), 13 Sept. 1970, p. 1. ProQuest. Web. 5 Aug. 2025.\r\nHughes, Allen. \"GUITAR RECITAL HAS NEW TOUCH: MICHAEL SULLIVAN USES ACTOR TO PLAY ROLE OF TORMENTOR.\" New York Times (1923-), 19 Sept. 1970, p. 33. ProQuest. Web. 5 Aug. 2025." . . . . "1970-09-17T20:30:00"^^ . . . . . "solo recital" . "Michael Sullivan, Guitar and Mixed Media" . . .