Piet Mondrian, Red Amaryllis with Blue Background, c. 1907, Watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38743 Piet Mondrian, Amstel River, 1907, Watercolor and charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36627 Piet Mondrian, Chrysanthemum (recto) and Head in Profile (verso), 1906, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34486 Anonymous Artist, Saint Bernard with Donor [obverse], probably early 20th century, oil on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3200 Anonymous Artist, Moonlight, early 20th century, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3204 Piet Mondrian, Landzicht Farm: Compositional Study, c. 1905, Fabricated charcoal on blue laid paper, Art Institute of Chicago, Chicago. https://dartabase.art/cite/aic/88464