Hokusai's Nakatomi no Yoshinobu (1830). Original public domain image from the MET museum. https://www.rawpixel.com/image/7639402/original-public-domain-image-from-the-met-museumFree Image from public domain licenseOver the counter medications can be the most deadly. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3338638/free-photo-image-capsule-cc0-creative-commonsFree Image from public domain licenseBooted Racket-tail (m) Ocreatus Underwoodii). Original public domain image from Flickr https://www.rawpixel.com/image/6079779/photo-image-public-domain-bird-hummingbirdFree Image from public domain licenseWhite basket fungus ( Ileodictyon cibarium )Ileodictyon cibarium is a saprobic species of fungus in the family Phallaceae. https://www.rawpixel.com/image/4023028/photo-image-public-domain-sphereFree Image from public domain licenseMission Church Doors and Doorway (1940) by Dayton Brown and Harry Mann Waddell. https://www.rawpixel.com/image/8229253/image-art-vintage-public-domainFree Image from public domain licenseElk and Buffalo Grazing among Prairie Flowers, Texas (1846–1848) painting in high resolution by George Catlin. https://www.rawpixel.com/image/7726743/image-art-public-domain-animalsFree Image from public domain licenseThe flying locomotive (ca. 1917) drawing in high resolution by Joseph Pennell. https://www.rawpixel.com/image/7724607/image-art-public-domain-drawingFree Image from public domain license