Woman 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 licenseOld Man with a Beard and a Bare Head, Turk Seen from Behind, Turk with a Turban, Turk Seen from Behind by Giovanni Domenico… https://www.rawpixel.com/image/8984452/image-paper-person-artFree Image from public domain licenseThe Torment of the Proud - Valley of Burning Sulphur by Simon Marmion https://www.rawpixel.com/image/14247704/the-torment-the-proud-valley-burning-sulphur-simon-marmionFree Image from public domain licenseÉpilepsie Hémiplégique Lésions Trophiques des Os by Paul Marie Léon Regnard https://www.rawpixel.com/image/14315652/epilepsie-hemiplegique-lesions-trophiques-des-paul-marie-leon-regnardFree Image from public domain licenseEtikhove (1926) by Lodewijk Schelfhout and N V Roeloffzen and Hübner https://www.rawpixel.com/image/13770347/etikhove-1926-lodewijk-schelfhout-and-roeloffzen-and-hubnerFree Image from public domain license