Miguel Conde, [Untitled], 1971, Ink and ink transfer on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34628

José Luis Cuevas, A Certificate of Authenticity, 1973, Cut-and-pasted paper, watercolor, and ink on wood, on linen-covered mount, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33106