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

Sonia Delaunay, Robe Poeme No. 1328, 1923, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36114

Robert Delaunay, Football. L'Equipe de Cardiff, (1916), Oil on paper on wood, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38194

Robert Delaunay, Rhythm/3 (Rythme/3) from Art of Today, Masters of Abstract Art (Art d'aujourd'hui, maîtres de l'art abstrait), Album I, 1953 (original executed in 1938), One from a portfolio of sixteen screenprint reproductions, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/31869

Robert Delaunay, Study for backdrop for the ballet Triomphe de Paris (The Triumph of Paris), 1928, Gouache on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36073

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

Sonia Delaunay, Pajamas for Tristan Tzara, 1923, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33389

Sonia Delaunay, Zaoum. Costume design for the play Le Coeur à Gaz, 1923, Watercolor, ink, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36123

Robert Delaunay, Costumes for The Dance of Statues for Triumphe de Paris, 1928, Gouache on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36078

Sonia Delaunay, Tristan Tzara with Monocle, 1923, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36086

František Kupka, Composition géométrique (Geometric composition), c.1909–11, Gouache on paper, Queensland Art Gallery and Gallery of Modern Art, Brisbane. https://dartabase.art/cite/qagoma/65734

Sonia Delaunay, Plate (folio 8) from 10 Origin, 1942, Linoleum cut from a portfolio of six linoleum cuts, three woodcuts, and one lithograph, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/19635

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

Sonia Delaunay, Étude de Robe No. 1284, 1926, Watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36102

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

Sonia Delaunay, Robe Poeme No. 688, 1922, Watercolor, gouache, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36107

Sonia Delaunay, Composition with triangles and semi-circles, unknown, Colour etching and aquatint on paper, Queensland Art Gallery and Gallery of Modern Art, Brisbane. https://dartabase.art/cite/qagoma/33166

Sonia Delaunay, [Untitled], c.1970, Colour etching, aquatint on wove paper, Queensland Art Gallery and Gallery of Modern Art, Brisbane. https://dartabase.art/cite/qagoma/12898

Robert Delaunay, Les folâtres jeux sont les premiers cuisiniers du monde, 1778, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3134

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

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

Robert Delaunay, Portrait of Iliazd, 1922, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36082

Robert Delaunay, The Tower, 1911, dated 1910, Ink and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35446

Sonia Delaunay, Colored Rhythm, 1953, Gouache and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38196

Robert Delaunay, Mort de Julie, 1749, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3127

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

Robert Delaunay, The Tower and the Wheel, c. 1912–13, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35439

Robert Delaunay, Costume designs for the unrealized ballet Triomphe de Paris (The Triumph of Paris), 1928, Gouache and pencil on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36067

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

Sonia Delaunay, Gouache from Art of Today, Masters of Abstract Art (Art d'aujourd'hui, maîtres de l'art abstrait), Album I, 1953 (original executed in 1950), One from a portfolio of sixteen screenprint reproductions, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/31870

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

Sonia Delaunay, Color Rhythm No. 1921-1973, 1973, Gouache and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38198

Sonia Delaunay, Robe Poeme No. 1329, 1923, Watercolor, pencil, and gouache on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36097

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

Sonia Delaunay, Yellow Dancer. Costume design for the play Le Coeur à Gaz, 1923, Watercolor, ink, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36131

Sonia Delaunay, Miss Mouth and Mr. Eye. Costume design for the play Le Coeur à Gaz, 1923, Ink and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33382

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

Robert Delaunay, Iphis, 1779, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3142