Johann Georg Zimmermann. Stipple engraving by K. Mackenzie, 1804. https://www.rawpixel.com/image/13995176/johann-georg-zimmermann-stipple-engraving-mackenzie-1804Free Image from public domain licenseMatthaeus Gottfried Purman. Line engraving by S. Blesendorff, 1691. https://www.rawpixel.com/image/14021285/matthaeus-gottfried-purman-line-engraving-blesendorff-1691Free Image from public domain licenseMichael Faraday. Mezzotint by C. Turner, 1838, after himself. https://www.rawpixel.com/image/14019117/michael-faraday-mezzotint-turner-1838-after-himselfFree Image from public domain licensePortrait of Philips (1566-95), Count of Nassau (c. 1609 - c. 1633) by anonymous https://www.rawpixel.com/image/13796273/portrait-philips-1566-95-count-nassau-c-1609-1633-anonymousFree Image from public domain licenseFree furry, white, brown and beige dog squinting his eyes image, public domain animal CC0 photo. https://www.rawpixel.com/image/5918841/image-background-face-public-domainFree Image from public domain licenseAbraham Cowley. Line engraving by G. Vertue, 1721, after Sir P. Lely. https://www.rawpixel.com/image/14019899/abraham-cowley-line-engraving-vertue-1721-after-sir-lelyFree Image from public domain licenseSir Isaac Newton. Stipple engraving by W. T. Fry after Sir G. Kneller, 1720. https://www.rawpixel.com/image/14004953/sir-isaac-newton-stipple-engraving-fry-after-sir-kneller-1720Free Image from public domain licenseAn ill man pulling a grotesque face and holding a cup. Coloured aquatint. https://www.rawpixel.com/image/13978629/ill-man-pulling-grotesque-face-and-holding-cup-coloured-aquatintFree Image from public domain licensePortret van Maria Henrietta Stuart (c. 1656 - c. 1710) by anonymous and William Faithorne II https://www.rawpixel.com/image/13768567/image-paper-face-personFree Image from public domain licenseGeorge Crabbe. Stipple engraving by J. Thomson, 1819, after H. W. Pickersgill. https://www.rawpixel.com/image/14001469/george-crabbe-stipple-engraving-thomson-1819-after-pickersgillFree Image from public domain licenseDaniel Turner. Line engraving by G. Vertue after J. Richardson. https://www.rawpixel.com/image/14001226/daniel-turner-line-engraving-vertue-after-richardsonFree Image from public domain licenseJames Ware. Stipple engraving by H. Cook, 1839, after M. Brown. https://www.rawpixel.com/image/13982532/james-ware-stipple-engraving-cook-1839-after-brownFree Image from public domain license"The President holds a koala backstage prior to the G20 Welcome to Country Ceremony at the Brisbane Convention and… https://www.rawpixel.com/image/4050876/image-face-public-domain-personFree Image from public domain licenseTwo unidentified men seated: one with a moustache, the other with a Vandyke beard and wearing a hat by Tewis Michelson https://www.rawpixel.com/image/14306416/image-face-person-artFree Image from public domain licenseJohannes Sambucus. Stipple engraving by A. Ehrenreich after Schedy. https://www.rawpixel.com/image/14005197/johannes-sambucus-stipple-engraving-ehrenreich-after-schedyFree Image from public domain licenseGiovanni Battista Comelli. Lithograph by A. Besteghi, 1842, after F. Spagnoli. https://www.rawpixel.com/image/13979531/giovanni-battista-comelli-lithograph-besteghi-1842-after-spagnoliFree Image from public domain licenseCharles Bonnet. Line engraving by J.F. Clemens after J. Juel, 1779. https://www.rawpixel.com/image/13984569/charles-bonnet-line-engraving-jf-clemens-after-juel-1779Free Image from public domain licenseFrancesco [Carlo] Giuseppe Guglielmo Botta. Lithograph by [R.] Focosi. https://www.rawpixel.com/image/13976956/francesco-carlo-giuseppe-guglielmo-botta-lithograph-r-focosiFree Image from public domain licenseUnidentified soldier or actor as soldier, seated by Delmaet and Durandelle https://www.rawpixel.com/image/14308668/unidentified-soldier-actor-soldier-seated-delmaet-and-durandelleFree Image from public domain licenseBarrel cactus. Hovenweep National Monument, 05/1972. Photographer: Norton, Boyd. Original public domain image from Flickr https://www.rawpixel.com/image/8802551/photo-image-plant-nature-redFree Image from public domain licenseA dentist reassures a terrified patient. Colour process print by C. Josef, c. 1930. https://www.rawpixel.com/image/13960038/image-cartoon-face-personFree Image from public domain licenseDr. Sharemo (Henry Harmood). Mezzotint by A. Miller after T. Stokes, ca. 1740. https://www.rawpixel.com/image/13985406/dr-sharemo-henry-harmood-mezzotint-miller-after-stokes-ca-1740Free Image from public domain licenseSir Isaac Newton. Stipple engraving by E. Scriven after J. Vanderbank, 1720. https://www.rawpixel.com/image/13985277/sir-isaac-newton-stipple-engraving-scriven-after-vanderbank-1720Free Image from public domain licenseWilliam Ball, a man weighing forty stone. Colour lithograph. https://www.rawpixel.com/image/14011371/william-ball-man-weighing-forty-stone-colour-lithographFree Image from public domain licenseMadame Charton by Achille Devéria and Théodule Devéria https://www.rawpixel.com/image/14271634/madame-charton-achille-deveria-and-theodule-deveriaFree Image from public domain licenseKarl Friedrich Jakob Sudhoff. Photograph by Hoenisch, 1929. https://www.rawpixel.com/image/13999664/karl-friedrich-jakob-sudhoff-photograph-hoenisch-1929Free Image from public domain licenseMajor General Sir William Mansfield [and] General Sir Colin Campbell https://www.rawpixel.com/image/14271796/major-general-sir-william-mansfield-and-general-sir-colin-campbellFree Image from public domain licenseChristian Perizonius. Line engraving attributed to S. van Lamseerde, 1654. https://www.rawpixel.com/image/13980674/christian-perizonius-line-engraving-attributed-van-lamseerde-1654Free Image from public domain licenseA young child hangs on to her father as he says goodbye and points outside to where his horse is saddled and waiting.… https://www.rawpixel.com/image/13979118/image-horse-face-personFree Image from public domain licenseFree brambling bird wings spread image, public domain animal CC0 photo. https://www.rawpixel.com/image/5925384/photo-image-public-domain-nature-illustrationFree Image from public domain licenseGeorg Wolfgang Wedel. Line engraving by G.A. Wolfgang, 1677. https://www.rawpixel.com/image/13966485/georg-wolfgang-wedel-line-engraving-ga-wolfgang-1677Free Image from public domain license