Sunburst in the Riesengebirge (1835) painting in high resolution by Caspar David Friedrich. https://www.rawpixel.com/image/7728727/image-art-public-domain-artworksFree Image from public domain licenseTwo Men Contemplating the Moon by Caspar David Friedrich https://www.rawpixel.com/image/9612696/two-men-contemplating-the-moon-caspar-david-friedrichFree Image from public domain licenseStatue of the Madonna in the Mountains by Caspar David Friedrich https://www.rawpixel.com/image/8968095/statue-the-madonna-the-mountains-caspar-david-friedrichFree Image from public domain licenseWoman with Spider's Web Between Bare Trees by Caspar David Friedrich https://www.rawpixel.com/image/8969426/woman-with-spiders-web-between-bare-trees-caspar-david-friedrichFree Image from public domain licenseCorner of the Meadow with Reeds and Other Plants by Adrian Zingg https://www.rawpixel.com/image/8977979/corner-the-meadow-with-reeds-and-other-plants-adrian-zinggFree Image from public domain licenseSamuel Christian Friedrich Hahnemann. Plaster by P.-J. David d'Angers, 1837. https://www.rawpixel.com/image/13977479/samuel-christian-friedrich-hahnemann-plaster-p-j-david-dangers-1837Free Image from public domain licenseDramatists and actors: twenty portraits. Engraving by J.W. Cook, 1825. https://www.rawpixel.com/image/14010244/dramatists-and-actors-twenty-portraits-engraving-jw-cook-1825Free Image from public domain licenseSamuel Christian Friedrich Hahnemann. Plaster by P.-J. David d'Angers, 1837. https://www.rawpixel.com/image/13999164/samuel-christian-friedrich-hahnemann-plaster-p-j-david-dangers-1837Free Image from public domain licenseJohann Friedrich Meckel the elder. Line engraving by J. Schleuen after A. Graf. https://www.rawpixel.com/image/13999414/johann-friedrich-meckel-the-elder-line-engraving-schleuen-after-grafFree Image from public domain license