Omar Rayo, Free-Fall, 1966, Charcoal and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37080

Jan Groth, [Untitled], 1970, Crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35882

Fernando Botero, Woman in a Bathtub, 1974, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34215

Fernando Botero, Painter of Still Lifes, 1975, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37120