An album cover: chrysanthemums seen through a torn umbrella. Colour woodcut, ca. 1900. https://www.rawpixel.com/image/13957476/image-background-flowers-personFree Image from public domain licenseCartoon, "The Menace of the Hour." The menace illustrated is the "Traction Monster" (i.e., the new electric subway system in… https://www.rawpixel.com/image/9975569/image-face-person-artFree Image from public domain licenseUtriusque cosmi maioris scilicet et minoris metaphysica, physica atque technica historia ... [Tractatus secundus de naturae… https://www.rawpixel.com/image/13991097/image-paper-art-patternFree Image from public domain licenseSeveral varieties of field snail (Helix hortensis). Colour reproduction of a painting by L. F. Muckley. https://www.rawpixel.com/image/13952039/image-cartoon-plant-treeFree Image from public domain licenseOriginal public domain image from Minneapolis Institute of Art. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7638375/image-art-vintage-public-domainFree Image from public domain licenseMola mola (Ocean sunfish) (in or after 1783) by Robert Jacob Gordon https://www.rawpixel.com/image/13788809/mola-mola-ocean-sunfish-in-after-1783-robert-jacob-gordonFree Image from public domain licenseThe top side of a large, flat whale coloured black with a white snout. Coloured engraving. https://www.rawpixel.com/image/13960679/image-person-art-animalFree Image from public domain licenseFree fishing kingfisher birds image, public domain animal CC0 photo. https://www.rawpixel.com/image/5907294/photo-image-background-public-domain-natureFree Image from public domain licenseIllustration from a medieval Spanish language astrology textbook attributed to Alfonso X the Wise. The image is meant to… https://www.rawpixel.com/image/9975822/image-face-person-artFree Image from public domain licenseTitelpagina voor: Wendingen, februari 1919 (1919) by Tom Poggenbeek https://www.rawpixel.com/image/13766609/titelpagina-voor-wendingen-februari-1919-1919-tom-poggenbeekFree Image from public domain licenseScene of Elijah's Sacrifice on Mount Carmel. (I Kings XVIII.) Palestine. by Carleton H Graves https://www.rawpixel.com/image/14291651/photo-image-cow-art-elephantFree Image from public domain licenseOberland Bernois. Le Gespaltenhorn (10874') et la Blumlisalp (11298'), vue prise du Schilthorn (9127'). by Adolphe Braun https://www.rawpixel.com/image/14287505/photo-image-person-mountain-animalFree Image from public domain licenseUnidentified baby, 3 mos. old - August 1887 by Thomas Barns https://www.rawpixel.com/image/14308674/unidentified-baby-mos-old-august-1887-thomas-barnsFree Image from public domain licenseHouse mice devouring a large cheese placed on the floor next to their hole. Etching by R Hicks, 1888. https://www.rawpixel.com/image/13996361/image-dog-paper-catFree Image from public domain licenseMourning cloak (Nymphalis antiopa) on willow buds by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038587/photo-image-plant-bee-butterflyFree Image from public domain licenseThe dance of death: death and the child. Etching by D.-N. Chodowiecki, 1791. https://www.rawpixel.com/image/14014508/the-dance-death-death-and-the-child-etching-d-n-chodowiecki-1791Free Image from public domain licenseA Tawny eagle sits in a tree near the Oloololo Escarpment in the Mara Triangle https://www.rawpixel.com/image/8812015/photo-image-tree-public-domain-birdFree Image from public domain licenseCushion Buckwheat - Eriogonum ovalifolium. Original public domain image from Flickr https://www.rawpixel.com/image/3309982/free-photo-image-buckwheat-flower-animal-blossomFree Image from public domain licenseSnow Geese MigratingThere are lots of snow geese visiting Port Louisa National Wildlife Refuge in Iowa! Photo by Jessica… https://www.rawpixel.com/image/4028947/photo-image-bird-natureFree Image from public domain licenseUnidentified little boy standing, with a little black dog seated in a chair by Augustus Morand https://www.rawpixel.com/image/14307003/photo-image-dog-face-personFree Image from public domain licenseYoung bison spar along the Firehole River by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038850/photo-image-elephant-animalFree Image from public domain licenseSurgery of the bladder of a man: seventeen figures. Coloured lithograph by J. Maclise, 1851. https://www.rawpixel.com/image/14005141/image-paper-cartoon-faceFree Image from public domain licenseA bull bison grazes near Clearwater Springs by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038113/photo-image-animal-public-domainFree Image from public domain licenseAvenue of Stone Animals Leading to the Ming Tombs, Pekin [sic] https://www.rawpixel.com/image/14315564/avenue-stone-animals-leading-the-ming-tombs-pekin-sicFree Image from public domain licenseWith his dog Ginger keeping a keen eye on the operations, Jason Grimm's feeds his chickens on his farm, Grimm Family Farm in… https://www.rawpixel.com/image/3262167/free-photo-image-farm-transportation-alt-animalFree Image from public domain licenseSurgery of the prostate gland. Coloured lithograph by J. Maclise, 1851. https://www.rawpixel.com/image/13957627/surgery-the-prostate-gland-coloured-lithograph-maclise-1851Free Image from public domain licenseUtriusque cosmi maioris scilicet et minoris metaphysica, physica atque technica historia ... [Tractatus secundus de naturae… https://www.rawpixel.com/image/13983669/image-paper-art-patternFree Image from public domain licenseLoricera pillicornis (side view)NPS / Christine MireUSA: Montana, Park CountyYellowstone NP Gardiner BasinPitfall Trap Ele.… https://www.rawpixel.com/image/4038134/photo-image-animal-public-domainFree Image from public domain licenseCosmographiae universalis libri VI in quibus ... describuntur, omnium habitabilis orbis partes situs, propriaeque dotes. https://www.rawpixel.com/image/13961616/image-paper-cartoon-faceFree Image from public domain licenseStarry False Solomon's Seal - Maianthemum stellatum. Original public domain image from Flickr https://www.rawpixel.com/image/3309791/free-photo-image-acanthaceae-amaryllidaceae-animalFree Image from public domain licenseCoaster brook trout spawning-egg collectionPhoto by Mallory Mackey/USFWS. Original public domain image from Flickr https://www.rawpixel.com/image/4028860/photo-image-wood-person-foodFree Image from public domain licensePetit traité contenant une des parties principalles de chirurgie, laquelle les chirurgiens hernières excercent. Ainsi quil… https://www.rawpixel.com/image/13991330/image-paper-cartoon-animalFree Image from public domain licenseAbove, a lion standing roaring in a mountainous landscape, below, the lion's track. Etching by J. E. Ridinger. https://www.rawpixel.com/image/13957660/image-dog-lion-paperFree Image from public domain licenseMain Street, Copperopolis, Calaveras County. by Lawrence and Houseworth https://www.rawpixel.com/image/14295192/main-street-copperopolis-calaveras-county-lawrence-and-houseworthFree Image from public domain license