Richard F. Shepard, "With Left Bank in Right, Avant-Garde Fete is Far Out."
New York Times (November 17, 1974)
This short article portrays a sprawling 11th Annual Avant Garde Festival at Shea Stadium as an exhibition of "unusual creative outbursts" and mentions the eclectic range of works by artists, including Yoko Ono, Ay-O, Otto Piene, John Cage.