George Alexander (Gratton), a black boy with white markings. Reproduction of wood engraving. https://www.rawpixel.com/image/13964410/image-paper-cartoon-faceFree Image from public domain licenseGeorge Alexander (Gratton), a black boy with white markings. Engraving by P.R. Cooper, 1809, after D. Orme. https://www.rawpixel.com/image/14008570/image-dog-cartoon-faceFree Image from public domain licenseJohn Boby, a black man with white markings. Reproduction of an etching, 1803. https://www.rawpixel.com/image/13975308/john-boby-black-man-with-white-markings-reproduction-etching-1803Free Image from public domain license