Yvan Goll was a French-German poet who was bilingual and wrote in both French and German. He had close ties to both German expressionism and to French surrealism.
Yvan Goll by Lajos Tihanyi, 1927
Yvan Goll, Surréalisme, Manifeste du surréalisme, Volume 1, Number 1, 1 October 1924, cover by Robert Delaunay
Robert Delaunay was a French artist of the School of Paris movement; who, with his wife Sonia Delaunay and others, co-founded the Orphism art movement, noted for its use of strong colours and geometric shapes. His later works were more abstract. His key influence related to bold use of colour and a clear love of experimentation with both depth and tone.
Robert Delaunay
Robert Delaunay, Paysage au disque, 1906–07, oil on canvas, 55 x 46 cm, Musée national d'art moderne (MNAM), Centre Georges Pompidou, Paris
Robert Delaunay. Champs de Mars: The Red Tower, 1911, oil on canvas, 160.7 x 128.6 cm, Art Institute of Chicago.
Robert Delaunay, Simultaneous Contrasts: Sun and Moon, 1912–13, oil on canvas, 53 in. (134.5 cm) in diameter, Museum of Modern Art