Opera omnia anatomico-medico-chirurgica, hucusque edita / [Frederik Ruysch]. https://www.rawpixel.com/image/13980231/opera-omnia-anatomico-medico-chirurgica-hucusque-edita-frederik-ruyschFree Image from public domain licenseA hart's tongue fern (Asplenium scolopendrium) growing on a pile of mossy rocks. Watercolour. https://www.rawpixel.com/image/13967024/image-paper-plant-artFree Image from public domain licenseFree shiba inu dog standing on snow image, public domain animal CC0 photo. https://www.rawpixel.com/image/5923562/photo-image-background-public-domain-dogFree Image from public domain licenseOld and New Tabernacle, Salt Lake, Utah. by Charles Bierstadt https://www.rawpixel.com/image/14288756/old-and-new-tabernacle-salt-lake-utah-charles-bierstadtFree Image from public domain licenseMilbert's Tortoiseshell - Aglais milberti. Original public domain image from Flickr https://www.rawpixel.com/image/3309992/free-photo-image-butterfly-moth-animalFree Image from public domain licenseRuins of Mission Purisima Concepcion by Louis Fleckenstein https://www.rawpixel.com/image/14283236/ruins-mission-purisima-concepcion-louis-fleckensteinFree Image from public domain licenseWhite-throated sparrowWhite-throated sparrow at Morris Wetland Management District. Photo by Alex Galt/USFWS. Original… https://www.rawpixel.com/image/4029130/photo-image-bird-animalFree Image from public domain licenseOriginal public domain image from Flickr https://www.rawpixel.com/image/4026426/original-public-domain-image-from-flickrView licenseTwo cows in stocks, Epping or New Market, N.H. by Oliver H Copeland https://www.rawpixel.com/image/14289147/two-cows-stocks-epping-new-market-nh-oliver-copelandFree Image from public domain licenseFree shiba inu dog standing on wooden floor image, public domain animal CC0 photo. https://www.rawpixel.com/image/5914931/image-background-public-domain-woodFree Image from public domain licenseBones of the trunk and pelvis: front view. Watercolour by J. Mongrédien, ca. 1880. https://www.rawpixel.com/image/13965378/image-art-watercolour-skeletonFree Image from public domain licenseScallops have up to 100 eyes around the edge of their mantles. These respond to light and dark allowing them to detect… https://www.rawpixel.com/image/4021217/photo-image-ocean-nature-beachFree Image from public domain license[A clown wearing colorful costume and mask, with wild hair and hat with animal on top, and holding a rattle]. Original from… https://www.rawpixel.com/image/7636699/image-art-vintage-public-domainFree Image from public domain licenseA fungus (Agaricus cerussatus): three fruiting bodies. Watercolour, 1865. https://www.rawpixel.com/image/13952158/fungus-agaricus-cerussatus-three-fruiting-bodies-watercolour-1865Free Image from public domain licenseMimulus guttatus, seep monkeyflower. Columbus, Montana. July 8, 2007. Original public domain image from Flickr https://www.rawpixel.com/image/3335716/free-photo-image-animal-anther-aquilegiaFree Image from public domain license