. . . . . "Entered from booking ledger and New York Times concert listing and review. Assisting performers are not identified.\r\n\"Who Makes Music and Where.\" New York Times (1923-), 19 Oct. 1969, p. 1. ProQuest. Web. 4 June 2025.\r\nStrongin, Theodore. \"Brevig, Trombonist, Plays Avant-Garde at 2d of 3 Recitals.\" New York Times (1923-), 20 Oct. 1969, p. 60. ProQuest. Web. 4 June 2025." . . . "Per Brevig, Trombone" . "solo recital" . . "1969-10-19T20:30:00"^^ . .