Free Goðafoss Waterfall in northern Iceland image, public domain destination CC0 photo. https://www.rawpixel.com/image/5911563/image-light-public-domain-treesFree Image from public domain licenseJean-Baptiste-Léon Dubreuil. Stipple engraving by C.A. Forestier. https://www.rawpixel.com/image/13979631/jean-baptiste-leon-dubreuil-stipple-engraving-ca-forestierFree Image from public domain licenseStudie van een man die een zak sjouwt (1851) by Johannes Engel Masurel https://www.rawpixel.com/image/13795687/studie-van-een-man-die-een-zak-sjouwt-1851-johannes-engel-masurelFree Image from public domain licensePortret van een onbekende vrouw op een stoel met een verrekijker (1878) by anonymous https://www.rawpixel.com/image/13759371/photo-image-face-person-artFree Image from public domain licenseEli S. Shorter by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318281/eli-shorter-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseVirgin in the Clouds, Engraved by M. Antonio by Caldesi and Montecchi https://www.rawpixel.com/image/14316208/virgin-the-clouds-engraved-antonio-caldesi-and-montecchiFree Image from public domain licenseWilliam H. English by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316857/william-english-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseBrière de Boismont, d[octeu]r, aliéniste by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14272719/briere-boismont-docteur-alieniste-nadar-gaspard-felix-tournachonFree Image from public domain licenseCaptain F.E.A. Chamier. A.D.C. to Sir J. Outram Subsequently Deputy Commissioner and District Judge in Oudh by Felice Beato https://www.rawpixel.com/image/14314782/image-face-hand-personFree Image from public domain licenseThomas Garnett. Stipple engraving by J. Hopwood, 1800, after J. R. Smith. https://www.rawpixel.com/image/13986288/thomas-garnett-stipple-engraving-hopwood-1800-after-smithFree Image from public domain licensePortrait of Gerard Reynst, Governor-General of the Dutch East Indies (1750 - 1800) by anonymous https://www.rawpixel.com/image/13796156/image-face-person-artFree Image from public domain licenseSaint Cosmas or Saint Damian. Oil painting by a Spanish painter (Granada), 18th century. https://www.rawpixel.com/image/13958403/image-face-person-artFree Image from public domain licenseAn écorché face showing the movements of facial muscles during laughter. Stipple engraving by G.T. Stubbs after G. Stubbs… https://www.rawpixel.com/image/14014629/image-cartoon-face-personFree Image from public domain licenseBenjamin Franklin. Line engraving, 1863, after A. Chappel. https://www.rawpixel.com/image/14004985/benjamin-franklin-line-engraving-1863-after-chappelFree Image from public domain licenseOld man with beard, fur cap, and velvet cloak (after 1631) by anonymous and Rembrandt van Rijn https://www.rawpixel.com/image/13769430/image-paper-face-frameFree Image from public domain licensePortret van Mr. J.D. Veegens (1881 - 1931) by Johannes Josephus Aarts https://www.rawpixel.com/image/13760362/portret-van-mr-jd-veegens-1881-1931-johannes-josephus-aartsFree Image from public domain licenseSamuel Solomon. Stipple engraving by W. Ridley & W. Holl after J. Steel. https://www.rawpixel.com/image/13994594/samuel-solomon-stipple-engraving-ridley-holl-after-steelFree Image from public domain licensePortrait of Jan Nieuwenhuyzen (1780 - 1806) by Adriaan de Lelie https://www.rawpixel.com/image/13792573/portrait-jan-nieuwenhuyzen-1780-1806-adriaan-lelieFree Image from public domain licenseSolomon Alexander Hart. Photograph by John & Charles Watkins. https://www.rawpixel.com/image/13990150/solomon-alexander-hart-photograph-john-charles-watkinsFree Image from public domain licenseAn ill man being bled by a surgeon. Coloured etching by J. Sneyd, 1804, after J. Gillray. https://www.rawpixel.com/image/13959579/image-cartoon-face-frameFree Image from public domain licenseWolf study crews watching a wolf pack by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4226054/photo-image-public-domain-person-cameraFree Image from public domain licenseLouis Pasteur, with two white rabbits in his arms. Colour lithograph by T. Chartran [T.], 1887. https://www.rawpixel.com/image/14006614/image-cartoon-face-personFree Image from public domain licenseSir John Lubbock, Baron Avebury. Reproduction after pencil drawing by H. T. Wells, 1896. https://www.rawpixel.com/image/13996967/image-face-person-artFree Image from public domain licenseMonsieur Samson (Théâtre Français) by André Adolphe Eugène Disdéri https://www.rawpixel.com/image/14315487/monsieur-samson-theatre-francais-andre-adolphe-eugene-disderiFree Image from public domain licensePortret van Eugeen van Oostenrijk (1880 - 1881) by anonymous https://www.rawpixel.com/image/13759951/portret-van-eugeen-van-oostenrijk-1880-1881-anonymousFree Image from public domain licenseAndrew Johnson by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317572/andrew-johnson-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseJohn G. Davis by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317556/john-davis-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseJoseph Acerbi. Stipple engraving by P. W. Tomkins, 1802, after P. Violet. https://www.rawpixel.com/image/13981484/joseph-acerbi-stipple-engraving-tomkins-1802-after-violetFree Image from public domain licenseSir Edmund King. Line engraving by R. White, 1684, after Sir G. Kneller. https://www.rawpixel.com/image/14008276/sir-edmund-king-line-engraving-white-1684-after-sir-knellerFree Image from public domain licenseAntoine Joseph Jobert de Lamballe. Wood engraving by L. Dumont. https://www.rawpixel.com/image/13983666/antoine-joseph-jobert-lamballe-wood-engraving-dumontFree Image from public domain licenseOtto von Guericke. Line engraving by C. Galle, 1649, after A. von Hulle. https://www.rawpixel.com/image/13982198/otto-von-guericke-line-engraving-galle-1649-after-von-hulleFree Image from public domain licensePortret van Pieter Jansz., glasschilder (1670 - 1680) by anonymous https://www.rawpixel.com/image/13786202/portret-van-pieter-jansz-glasschilder-1670-1680-anonymousFree Image from public domain licenseHenry L. Dawes by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318122/henry-dawes-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseGeorges-Léopold-Chrétien-Frédéric-Dagobert, Baron Cuvier. Lithograph by Delaporte after N. Jacques. https://www.rawpixel.com/image/14011814/image-paper-face-personFree Image from public domain licenseOle Worm. Line engraving by G. Wingendorp, 1655, after C. van Mander III. https://www.rawpixel.com/image/13984691/ole-worm-line-engraving-wingendorp-1655-after-van-mander-iiiFree Image from public domain licenseJohn B. Rodman, Rock Island Arsenal, Ill. by George Kendall Warren https://www.rawpixel.com/image/14318522/john-rodman-rock-island-arsenal-ill-george-kendall-warrenFree Image from public domain licenseBernard le Bovier de Fontanelle. Stipple engraving by J. Condé, 1793. https://www.rawpixel.com/image/13987072/bernard-bovier-fontanelle-stipple-engraving-conde-1793Free Image from public domain licenseLawrence M. Keitt by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316856/lawrence-keitt-james-earle-mcclees-and-julian-vannersonFree Image from public domain licensePortrait of a Young Girl Reading by Oscar Gustave Rejlander https://www.rawpixel.com/image/14253702/portrait-young-girl-reading-oscar-gustave-rejlanderFree Image from public domain licenseSir John Soane. Mezzotint by C. Turner after Sir T. Lawrence. https://www.rawpixel.com/image/13967975/sir-john-soane-mezzotint-turner-after-sir-lawrenceFree Image from public domain licenseTwo children are watching a moth hovering over flames, while Penelope, who is accompanied by a stork, encourages them to… https://www.rawpixel.com/image/13985860/image-cartoon-face-personFree Image from public domain licenseA coyote howling on snow in Lamar Valley. Original #IT8M8861. Original public domain image from Flickr https://www.rawpixel.com/image/4038267/photo-image-dog-animalFree Image from public domain licensePeacock, vibrant blue, green feathers. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289605/free-photo-image-peacock-zoo-animals-animalFree Image from public domain licenseJames Wilson by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316686/james-wilson-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseKing Charles I. Engraving by B. Picart, 1729, after A. van Dyck. https://www.rawpixel.com/image/13999970/king-charles-engraving-picart-1729-after-van-dyckFree Image from public domain license