A giant hand roaming through the dark streets of London, people and rats try to escape its grasp; representing bubonic… https://www.rawpixel.com/image/13956069/image-face-hand-personFree Image from public domain licenseAfrica: indigenous plants and mammals of Ethiopia, including elephants and hippopotami. Engraving. https://www.rawpixel.com/image/14007920/image-dog-horse-cartoonFree Image from public domain license