William Buckland. Lithograph by T. H. Maguire, 1849, after A. Claudet. https://www.rawpixel.com/image/13975189/william-buckland-lithograph-maguire-1849-after-claudetFree Image from public domain licenseJohn Locke. Stipple engraving by S. Freeman, 1825, after Sir G. Kneller. https://www.rawpixel.com/image/14004314/john-locke-stipple-engraving-freeman-1825-after-sir-knellerFree Image from public domain licenseMan werkt met vloeistoffen in trechters (1900 - 1920) by G Hidderley https://www.rawpixel.com/image/13760149/man-werkt-met-vloeistoffen-trechters-1900-1920-hidderleyFree Image from public domain licenseZelfportret van Jacob Perkois (1766 - 1804) by Jacob Perkois https://www.rawpixel.com/image/13787542/zelfportret-van-jacob-perkois-1766-1804-jacob-perkoisFree Image from public domain licenseA tiger lying on a wooden platform in a cage and roaring. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3288585/free-photo-image-tiger-cat-animalFree Image from public domain licenseSir Henry Thompson. Watercolour by C. Pellegrini [Ape], 1874. https://www.rawpixel.com/image/13956014/sir-henry-thompson-watercolour-pellegrini-ape-1874Free Image from public domain licenseSir Alexander Cruikshank Houston. Photograph by Whitlock & Sons. https://www.rawpixel.com/image/13984412/sir-alexander-cruikshank-houston-photograph-whitlock-sonsFree Image from public domain licensePeople gathered around a candle-lit table; one man, held by another appears terrified, one person holds a glass, and a large… https://www.rawpixel.com/image/13956090/image-background-face-peopleFree Image from public domain licenseUmpqua NF - Heliograph Use, OR c1911Umpqua National Forest Historic Photo. Original public domain image from Flickr https://www.rawpixel.com/image/4075607/photo-image-face-tree-plantFree Image from public domain licenseThe 2019 White House's Christmas ornament. Original public domain image from Flickr https://www.rawpixel.com/image/4049136/photo-image-tree-plant-ornamentFree Image from public domain licenseSaint Francis of Assisi inducing a hyena to a state of obedience. Etching by J.B.M. Pierre. https://www.rawpixel.com/image/14004874/image-cartoon-face-personFree Image from public domain licenseAllegorie op de Vrede van Amiens, 1802 (1806) by Christiaan Josi, Christiaan Josi and Christiaan Josi https://www.rawpixel.com/image/13784133/image-paper-angel-faceFree Image from public domain licenseAbraham Titsingh. Line engraving by J. Houbraken after J. M. Quinkhard, 1742. https://www.rawpixel.com/image/14019985/abraham-titsingh-line-engraving-houbraken-after-quinkhard-1742Free Image from public domain licenseJohn Mackie. Stipple engraving by S. Freeman, 1830, after J. Moore. https://www.rawpixel.com/image/14019145/john-mackie-stipple-engraving-freeman-1830-after-mooreFree Image from public domain licenseTekening van een vrouw in lijst door Mathieu Lauweriks (in or after 1897) by anonymous and Mathieu Lauweriks https://www.rawpixel.com/image/13754452/photo-image-face-frame-personFree Image from public domain licenseAndré-Marie-Constant Duméril. Lithograph by J. Boilly, 1822. https://www.rawpixel.com/image/14005002/andre-marie-constant-dumeril-lithograph-boilly-1822Free Image from public domain licenseA man designated as Dr William Hunter. Oil painting by Sir Joshua Reynolds. https://www.rawpixel.com/image/13951671/man-designated-william-hunter-oil-painting-sir-joshua-reynoldsFree Image from public domain licenseSkiers overlook Tower Junction from Lost Lake Trail by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4226073/photo-image-public-domain-tree-plantFree Image from public domain licenseSir John Leslie. Line engraving by J. Horsburgh after Sir D. Wilkie, 1834. https://www.rawpixel.com/image/14010418/sir-john-leslie-line-engraving-horsburgh-after-sir-wilkie-1834Free Image from public domain licenseDoctor Wardlaw, by D. Macnee, R.S.A. by Caldesi and Montecchi https://www.rawpixel.com/image/14316020/doctor-wardlaw-macnee-rsa-caldesi-and-montecchiFree Image from public domain licenseThe heads of five women with braided hair dressed with flowers, ribbons and beads. Coloured lithograph by Michelet, 1864… https://www.rawpixel.com/image/13968145/image-cartoon-face-flowersFree Image from public domain licenseThe circulatory system: dissections of the neck of a man, with arteries, blood vessels and veins indicated in red and blue.… https://www.rawpixel.com/image/13983479/image-cartoon-face-personFree Image from public domain licenseT.G. Pitcher, Brevet Brigadier General, Superintendent by George Kendall Warren https://www.rawpixel.com/image/14318680/tg-pitcher-brevet-brigadier-general-superintendent-george-kendall-warrenFree Image from public domain licenseAn insensitive surgeon. Colour process print by C. Josef, c. 1930. https://www.rawpixel.com/image/13956178/insensitive-surgeon-colour-process-print-josef-1930Free Image from public domain licenseFree two women sitting on the rock next to the river watching Sydney Opera House image, public domain CC0 photo. https://www.rawpixel.com/image/5908422/photo-image-background-public-domain-peopleFree Image from public domain licenseAnders Andersen Ellen by Prince Roland Napoleon Bonaparte and G Roche https://www.rawpixel.com/image/14309232/anders-andersen-ellen-prince-roland-napoleon-bonaparte-and-rocheFree Image from public domain licenseBull bison walks in the snowy road near Midway Geyser Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4038176/photo-image-dog-animalFree Image from public domain licenseEdward Waring. Stipple engraving by J.G. and G.S. Facius after T. Kerrich. https://www.rawpixel.com/image/13999025/edward-waring-stipple-engraving-jg-and-gs-facius-after-kerrichFree Image from public domain licenseThe art dealer and publisher Clement de Jonghe by Rembrandt van Rijn https://www.rawpixel.com/image/8924134/the-art-dealer-and-publisher-clement-jongheFree Image from public domain licenseDolores (Lady Brownlow) by Ronald Ruthven Leslie Melville https://www.rawpixel.com/image/14326263/dolores-lady-brownlow-ronald-ruthven-leslie-melvilleFree Image from public domain licenseFree young cow standing on flower field image, public domain animal CC0 photo. https://www.rawpixel.com/image/5904536/photo-image-background-flower-public-domainFree Image from public domain licenseJohann Friedrich Blumenbach. Stipple engraving by J. F. Bolt after L. E. Grimm, 1825. https://www.rawpixel.com/image/13973294/image-cartoon-face-personFree Image from public domain licenseA blind man holding out a begging bowl and supported by a stick is carrying a small child in a basket on his back.… https://www.rawpixel.com/image/13966471/image-dog-cartoon-faceFree Image from public domain licenseArthur Henry Cheatle. Photograph by the London Stereoscopic Co. https://www.rawpixel.com/image/14010752/arthur-henry-cheatle-photograph-the-london-stereoscopic-coFree Image from public domain licenseJules Lovy, publiciste by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14271390/jules-lovy-publiciste-nadar-gaspard-felix-tournachonFree Image from public domain licensePortret van een man uit de familie Bentinck (c. 1800) by anonymous https://www.rawpixel.com/image/13796331/portret-van-een-man-uit-familie-bentinck-c-1800-anonymousFree Image from public domain licenseDa Nang, Vietnam, 08/08 - Brush In - Showing young Vietnamese patients at Hoa Khanh Children's Hospital how to brush their… https://www.rawpixel.com/image/3400359/free-image-apparel-cc0-childrenFree Image from public domain licenseBuste van een man, met halsketting (1700 - 1800) by anonymous https://www.rawpixel.com/image/13782800/buste-van-een-man-met-halsketting-1700-1800-anonymousFree Image from public domain license