Staande boerenjongen, naar links (1700 - 1800) by anonymous https://www.rawpixel.com/image/13786452/staande-boerenjongen-naar-links-1700-1800-anonymousFree Image from public domain licensePortret van Ahmed I, II of IV, sultan van het Ottomaanse Rijk, op 10-jarige leeftijd (1600 - 1799) by anonymous https://www.rawpixel.com/image/13785656/image-paper-cartoon-faceFree Image from public domain licenseMarie Pasteur, Madame Louis Pasteur. Photograph after A. Edelfelt, 1899. https://www.rawpixel.com/image/13967290/marie-pasteur-madame-louis-pasteur-photograph-after-edelfelt-1899Free Image from public domain licensePortret van tsaar Alexander I van Rusland (1825 - 1827) by Walraad Nieuwhoff, Gerrit Jacobus Geusendam and W Esser https://www.rawpixel.com/image/13777895/image-paper-face-personFree Image from public domain licenseCte Walewski [Alexandre Florian Joseph Colonna Walewski, 1810 - 1868] by Leon Crémière and Cie https://www.rawpixel.com/image/14309358/image-face-person-clothingFree Image from public domain licenseUnidentified Union soldier, standing by Charles DeForest Fredricks https://www.rawpixel.com/image/14308042/unidentified-union-soldier-standing-charles-deforest-fredricksFree Image from public domain license"Professor de Aroca" []. Oil painting by an Italian painter, 18th century. https://www.rawpixel.com/image/13974048/professor-aroca-oil-painting-italian-painter-18th-centuryFree Image from public domain licenseThe Christ Child as the Good Shepherd. Engraving after B.E. Murillo. https://www.rawpixel.com/image/13990071/the-christ-child-the-good-shepherd-engraving-after-be-murilloFree Image from public domain licenseRobert Koch. Photograph by Kaufmann-Fabry after a bust, 1933. https://www.rawpixel.com/image/13969648/robert-koch-photograph-kaufmann-fabry-after-bust-1933Free Image from public domain licensePortret van een jonge vrouw (c. 1750 - c. 1775) by Gilles Demarteau, François Boucher and Gilles Demarteau https://www.rawpixel.com/image/13778918/image-paper-face-frameFree Image from public domain licenseRalph Waldo Emerson, printed in vignette-style by James W Black and Co https://www.rawpixel.com/image/14308824/ralph-waldo-emerson-printed-vignette-style-james-black-andFree Image from public domain licenseOld Cadet Mess Hall, West Point by George Kendall Warren https://www.rawpixel.com/image/14318172/old-cadet-mess-hall-west-point-george-kendall-warrenFree Image from public domain licensePortret van Tan-oc-Lung Callaja-Raja-Maitrj. Oppatud (1651 - 1704) by anonymous, François Jollain and Franse kroon https://www.rawpixel.com/image/13762869/image-paper-face-personFree Image from public domain licenseThe people of China weighed down by the hierarchy of emperor, mandarins and priests. Coloured lithograph by Smith, 1858. https://www.rawpixel.com/image/13962103/image-cartoon-face-personFree Image from public domain licenseGray Seal (2013) by Abby Wood. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060039/free-photo-image-zoo-animals-seal-abby-woodFree Image from public domain licenseSir Henry Halford. Stipple engraving by J. Cochran after H. Room. https://www.rawpixel.com/image/14001349/sir-henry-halford-stipple-engraving-cochran-after-roomFree Image from public domain licenseProfile of a man with extensive growths on his nose. Line engraving. https://www.rawpixel.com/image/13985813/profile-man-with-extensive-growths-his-nose-line-engravingFree Image from public domain licenseDe humana physiognomonia libri IIII / [Giambattista della Porta]. https://www.rawpixel.com/image/14020752/humana-physiognomonia-libri-iiii-giambattista-della-portaFree Image from public domain licenseA woman standing in front of the reservoirs of Ras El 'Ain and part of a Roman aqueduct. Wood engraving. https://www.rawpixel.com/image/13987490/image-cartoon-plant-personFree Image from public domain licenseCarolus Linnaeus. Line engraving by C.C. Bervic, 1779, after A. Roslin, 1775. https://www.rawpixel.com/image/14020785/carolus-linnaeus-line-engraving-cc-bervic-1779-after-roslin-1775Free Image from public domain licenseA man holding a skull. Oil painting by an English painter, 1615. https://www.rawpixel.com/image/13968699/man-holding-skull-oil-painting-english-painter-1615Free Image from public domain licenseJames Turner, a beggar and a painter's model, aged 93. Etching by R. Graves, after N. Hone. https://www.rawpixel.com/image/14002734/image-face-person-artFree Image from public domain licenseAn pharmacist's apprentice mixing up a prescription. Coloured wood engraving by Stypułkowski after J.J. Grandville. https://www.rawpixel.com/image/13955100/image-cartoon-face-personFree Image from public domain licenseFrançois Marie Raoult. Photograph by Ch. Piccardy à Grenoble. https://www.rawpixel.com/image/14015458/francois-marie-raoult-photograph-ch-piccardy-grenobleFree Image from public domain licenseA Bulgarian soldier secures the perimeter of a forward operating base during exercise Rapid Trident 2014 in Yavoriv… https://www.rawpixel.com/image/3318634/free-photo-image-brass-section-cc0-creative-commonsFree Image from public domain licenseSaint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Stipple engraving by P.W. Tomkins, 1789… https://www.rawpixel.com/image/14006254/image-cartoon-face-jesus-christFree Image from public domain licenseSolomon Foot by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317496/solomon-foot-james-earle-mcclees-and-julian-vannersonFree Image from public domain licensePortrait of Jan Pietersz Coen, Governor-General of the Dutch East Indies (1750 - 1800) by anonymous https://www.rawpixel.com/image/13796394/image-face-person-artFree Image from public domain licenseFiguren bij een rivierbedding met bomen (1851) by Jean Alexis Achard https://www.rawpixel.com/image/13777425/figuren-bij-een-rivierbedding-met-bomen-1851-jean-alexis-achardFree Image from public domain licenseAn alchemist peering into a glass vessel. Mezzotint by F.R. Say, 1819, after J. Northcote. https://www.rawpixel.com/image/13959250/image-face-person-artFree Image from public domain licenseAureolus Theophrastus Bombastus von Hohenheim [Paracelsus]. Woodcut by A. Hirschvogel, 1538. https://www.rawpixel.com/image/14010714/image-paper-cartoon-faceFree Image from public domain licenseChina. Photograph, 1981, from a negative by John Thomson, 1869. https://www.rawpixel.com/image/14010740/china-photograph-1981-from-negative-john-thomson-1869Free Image from public domain licenseThe Devil's Gate, Weber Canyon, Utah. Photograph, ca. 1880. https://www.rawpixel.com/image/13987148/the-devils-gate-weber-canyon-utah-photograph-ca-1880Free Image from public domain licenseKing Charles I. Engraving by B. Audran the elder, ca. 1697, after A. Van Dyck. https://www.rawpixel.com/image/14011854/king-charles-engraving-audran-the-elder-ca-1697-after-van-dyckFree Image from public domain licenseWhitworth, inv[en]t[eu]r du canon raye by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14272581/whitworth-inventeur-canon-raye-nadar-gaspard-felix-tournachonFree Image from public domain licenseA witch placing a scorpion into a pot in order to make a potion. Etching by F. Landerer after M. Schmidt. https://www.rawpixel.com/image/13975619/image-cartoon-person-artFree Image from public domain licenseMartin Heinrich Karl Lichtenstein. Stipple engraving by R. Cooper, 1812. https://www.rawpixel.com/image/13983528/martin-heinrich-karl-lichtenstein-stipple-engraving-cooper-1812Free Image from public domain licenseSir Joseph Norman Lockyer. Process print after Elliott & Fry. https://www.rawpixel.com/image/13992251/sir-joseph-norman-lockyer-process-print-after-elliott-fryFree Image from public domain licenseOsakabe Tetsutarō-Masayoshi, an Officer of the First Rank, Belonging to the Censor, Member of the First Japanese Diplomatic… https://www.rawpixel.com/image/14286242/photo-image-face-person-clothingFree Image from public domain licenseCaspar Hofmann. Line engraving by C. Bozza after T. Matteini. https://www.rawpixel.com/image/13975906/caspar-hofmann-line-engraving-bozza-after-matteiniFree Image from public domain licenseDes maladies mentales considérées sous les rapports médical, hygiénique et médico-légal / [Etienne Esquirol]. https://www.rawpixel.com/image/13976976/image-cartoon-face-personFree Image from public domain licenseA man grimacing at some unpleasant tasting medicine he has been prescribed to take. Coloured aquatint. https://www.rawpixel.com/image/13956691/image-cartoon-face-personFree Image from public domain license