Valerio Adami, The Easy Chair in the Window, 1970, Colored pencil, watercolor, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35772

Giuseppe Penone, [Untitled], 1974, Gelatin silver prints (4), Art Institute of Chicago, Chicago. https://dartabase.art/cite/aic/230004