Gerd Leufert, [Untitled], 1963, Pencil on newsprint, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38421

Marisol (Marisol Escobar), [Untitled], 1960, Crayon and cut-and-pasted paper on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34057