František Kupka, [Untitled], 1928, Gouache, watercolor, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38252

František Kupka, Girl with a Ball, c. 1908, Pastel on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37352

Anselm Feuerbach, Bildnis einer Römerin in weißer Tunika und rotem Mantel (Lucrezia Borgia), c. 1862–1866, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1141

Tomas Rajlich, [Untitled], 1976, Cut-and-pasted printed paper with gesso on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36477

Carl Spitzweg, Der Witwer, 1844, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/3174

Carl Spitzweg, Der Rosenfreund, c. 1847–1850, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/4013

Stanislav Kolibal, [Untitled], (1975), Ballpoint pen and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34553

Stanislav Kolibal, [Untitled], (1975), Ballpoint pen and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34568

Carl Spitzweg, Der Einsiedler vor seiner Klause, 1844, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1344

František Kupka, Admiration, c. 1899, Gouache, charcoal, watercolor, crayon, and pastel on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33684

Alphonse Mucha, Rocks on the Shore, n.d., Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36941

Franz von Lenbach, Bildnis des Ludwig von Hagn, Sohn des Malers Ludwig von Hagn, n.d., Öl auf Holz, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1804

Tomas Rajlich, [Untitled], 1976, Cut-and-pasted printed paper with gesso on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36467

Jirí Kolár, Stinova (Mrs. Stein), (1960's), Cut-and-pasted printed paper on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36697

František Kupka, Bather, (1906), Pastel and charcoal on gray paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37271

Carl Rottmann, Griechische Landschaft auf der Insel Aegina, 1842–1845, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1480

František Kupka, Replica of Fugue in Two Colors: Amorpha, 1912, (1946), Gouache, ink, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34761

Anton Zwengauer, Rehe in Landschaft mit Sonnenuntergang, 1847, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/103181

František Kupka, Study in Verticals (The Cathedral), (1912), Pastel on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34122

Carl Rottmann, Tiryns, 1834, Aquarell über Bleistift auf beigem Velinpapier, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/17152

Alphonse Mucha, Head of a Child, (n.d.), Pencil on board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36948

František Kupka, Replica (1946) of Vertical Planes, (1946), Watercolor, gouache, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34788

František Kupka, View from a Carriage Window, c. 1901, Gouache and watercolor on paper with cardboard overlay, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34108

František Kupka, [Untitled], c. 1925–30, Colored pencil, pencil, ink, and oil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38250

František Kupka, An Absolute (Une Absolue) from Art of Today, Masters of Abstract Art (Art d'aujourd'hui, maîtres de l'art abstrait), Album I, 1953 (original executed in 1952), One from a portfolio of sixteen screenprint reproductions, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/31875

Tomas Rajlich, [Untitled], 1976, Cut-and-pasted printed paper with gesso on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36472

Domenico Quaglio d. J., Ansicht von Frankfurt am Main, 1831, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1115

František Kupka, Study with Green, (c. 1912), Chalk and gouache on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38151

František Kupka, Prometheus, (1909), Gouache, watercolor, ink, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36018