Claudio Bravo, White Package, 1967, Chalk, conté crayon, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38562

Claudio Bravo, The Skull, 1973, Conté crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35749