René Magritte, Perspective, (1963), Crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36809

Victor Servranckx, Composition, c. 1927, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37699

Adolph von Menzel, Head of a Bearded Man, 1884, Graphite, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334928

René Magritte, The Thought Which Sees, 1965, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35714

Roél d'Haese, [Untitled], 1959, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33976

Marcel Broodthaers, "M.B. M.B. M.B....", 1970, Ink on paper in artist's frames, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37802

Anonymous Artist, Judith with the Head of Holofernes, c. 1480, pen and dark brown ink with black chalk and white heightening on olive-brown prepared paper laid down on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/319

Théo van Rysselberghe, Self-Portrait, (1888–89), Pastel and crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35486

Adolph von Menzel, Doctor and Patient, 1899, Graphite, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334927

George Minne, Kneeling Youth, 1896, dated 1905, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36048

Anonymous Artist, Christ before Pilate, 1606, brush and brown ink on brown paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1841

Adolph von Menzel, Woman with a Crushed Velvet Hat, 1894, Graphite, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334929

Roél d'Haese, [Untitled], 1959, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33963

Georges Lemmen, Farmhouse in Flanders, 1890, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34891

Anonymous Artist, An Oriental, 1606, pen and brown ink with brush and brown-black ink on laid paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1851