Exhibition catalogue published in conjunction with the 10th Bienal de São Paolo held September - December, 1969. Following the passage in Brazil of Institutional Act n. 5 (AI-5) eighty percent of invited artists refused to participate. It was nicknamed the "Boycott Bienal. "Text by Francisco Matarazzo Sobrinho, Herbert Pée, and many others. Participating artists included Josef Albers, Horst Antes, Iaian Baxter, Henri Matisse, Sonia Delaunay, and more than 400 others. Text in Portuguese with some English.
