The Transfigurator or the French Lunette. Original from the Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/7615470/image-art-vintage-public-domainFree Image from public domain licenseOlson Microgravity Flame (2011) space art by NASA. Original public domain image from Wikimedia Commons. Digitally enhanced… https://www.rawpixel.com/image/10184885/image-paper-flower-artFree Image from public domain licenseAncient of Days Setting a Compass to the Earth (1794) illustration from Europe: a Prophecy by William Blake (1752-1827).… https://www.rawpixel.com/image/328175/free-illustration-image-god-william-blake-musicFree Image from public domain licenseFan pattern from section III plate I. by G.A. Audsley-Japanese illustration. Public domain image from our own original 1884… https://www.rawpixel.com/image/10198868/image-flower-plant-christmasFree Image from public domain license