Jannis Kounellis, Untitled (Hanging Knife), 1991, Metal, glass, etching on paper, hook and knife, Tate, London. https://dartabase.art/cite/tate/AR00582

Adolph von Menzel, Der Bärenzwinger im zoologischen Garten (The Bear Pit in the Zoological Gardens), 1851, lithograph on Chine appliqué on wove paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/9075

Jannis Kounellis, Untitled (Coffee), 1989–91, Metal, glass, etching on paper, coffee beans and lead, Tate, London. https://dartabase.art/cite/tate/AR00581