Ottilie W. Roederstein, Bildnis des Malers Jakob Nussbaum, 1909, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/2977

Ferdinand Hodler, Bezauberter Knabe, um 1909, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/2061

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

Ferdinand Hodler, Figure (Study for die Empfindung), (1902–03), Pencil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34876

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

Ferdinand Hodler, Genfer See mit den Savoyer Alpen, 1907–1911, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/4089

Augusto Giacometti, Color Abstraction, 1903, Pastel on paper mounted on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36786

Félix Vallotton, Jura-Landschaft bei Romanel, 1900, Öl auf Malpappe, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/4057

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