Peter Paul Rubens, The Garden of Love (left portion), c. 1633–35, Pen, brown ink, brush and gray-green wash over traces of black chalk, touched with indigo, green, yellowish, and white paint, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334653

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

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

Jan Groth, [Untitled], 1970, Crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35882

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

Peter Paul Rubens, Susanna, 1577, Pen and brown ink, brush and brown wash, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334709