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

Giuseppe Penone, Untitled (No. 1), 1981, Cut-and-pasted painted paper, gouache, charcoal, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36297

Giuseppe Penone, Untitled (No. 2), (1981), Crayon and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36304

Giuseppe Penone, Untitled (No. 3), (1981), Charcoal, pencil, and pressure-sensitive tape on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36312

Giuseppe Penone, Untitled (No. 4), (1981), Crayon and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36318

Giuseppe Penone, Untitled (No. 5), (1981), Gouache, charcoal, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36324