Black Power, chromolithograph art by Alfredo Rostgaard. Original public domain image from Smithsonian. Digitally enhanced by… https://www.rawpixel.com/image/9700657/image-art-tiger-vintageFree Image from public domain licenseSPQR by Victor Proetz, American (1897–1966). Original public domain image from Saint Louis Art Museum. Digitally… https://www.rawpixel.com/image/9851211/image-people-art-patternFree Image from public domain licenseBlack Power, chromolithograph art by Alfredo Rostgaard. Original public domain image from Smithsonian. Digitally enhanced by… https://www.rawpixel.com/image/9741531/image-art-tiger-vintageFree Image from public domain licenseSmall circular world map (1524) chromolithograph art by Petrus Apianus. Original public domain image from Digital… https://www.rawpixel.com/image/9700378/image-art-vintage-starsFree Image from public domain license