Portrait of Dina Klaver (1916) by Julie de Graag (1877-1924). Original from The Rijksmuseum. Digitally enhanced by rawpixel https://www.rawpixel.com/image/466817/free-illustration-image-julie-graag-julie-graag-1900s-public-domainFree Image from public domain licenseOpera singer Ernestine Schumann-Heink (1894) by Julie de Graag (1877-1924). Original from The Rijksmuseum. Digitally… https://www.rawpixel.com/image/466786/free-illustration-image-opera-arts-singerFree Image from public domain licenseFour chestnuts by Julie de Graag (1877-1924). Original from The Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/467025/free-illustration-image-1900s-public-domain-woodcut-art-nouveauFree Image from public domain licensePortrait of Adriaan with a pipe and a man in a suit (1892) by Julie de Graag (1877-1924). Original from The Rijksmuseum.… https://www.rawpixel.com/image/466823/free-illustration-image-pipe-head-1800sFree Image from public domain licenseWilliam Morris's Lodden (1884) famous pattern. Original from The Smithsonian Institution. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2462525/free-illustration-image-william-morris-floral-flowerFree Image from public domain licenseWilliam Morris's (1834-1896) Pink and Rose famous pattern. Original from The MET Museum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/496098/free-illustration-image-pattern-william-morris-art-nouveauFree Image from public domain licenseWilliam Morris's Honeysuckle (1876) famous pattern. Original from The MET Museum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2478173/free-illustration-image-william-morris-art-nouveau-patternFree Image from public domain licenseOrchideae–Denusblumen / A. Giltsch, gem from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of… https://www.rawpixel.com/image/2268369/free-illustration-image-vintage-haeckel-orchidFree Image from public domain licenseWilliam Morris's Tulip and Willow (1875) famous artwork. Original from The Birmingham Museum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2468550/free-illustration-image-william-morris-pattern-art-nouveauFree Image from public domain licenseEglantier (wild rose) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil.… https://www.rawpixel.com/image/2402643/free-illustration-image-art-deco-pattern-flowersFree Image from public domain licensePavot (poppy) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil. Original from… https://www.rawpixel.com/image/2403972/free-illustration-image-pattern-art-nouveau-decoFree Image from public domain licenseLilas (Lilac) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil. Original from… https://www.rawpixel.com/image/2419829/free-illustration-image-lilac-art-deco-patternFree Image from public domain licenseOiseaux et glycines, tenture. Lézards et lierre, bordure from L'animal dans la décoration (1897) illustrated… https://www.rawpixel.com/image/2053811/illustration-from-lanimal-dans-decorationFree Image from public domain licenseNaked man posing sexually. Male Nude (1880) by Gustav Klimt. Original from The Art Institute of Chicago. Digitally enhanced… https://www.rawpixel.com/image/2468821/free-illustration-image-klimt-naked-man-nude-maleFree Image from public domain licenseThe Fates: Study of the Lovers (1865) by Edward Burne-Jones. Original from The Birmingham Museum. Digitally enhanced by… https://www.rawpixel.com/image/2478882/free-illustration-image-love-man-and-woman-figure-artFree Image from public domain license