Alfred B. Greenwood by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316624/alfred-greenwood-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseSir Frederick Gowland Hopkins. Photograph by J. Palmer Clarke. https://www.rawpixel.com/image/13991081/sir-frederick-gowland-hopkins-photograph-palmer-clarkeFree Image from public domain licenseMoritz Wilhelm Mueller. Lithograph by G. Schlick after himself. https://www.rawpixel.com/image/13973476/moritz-wilhelm-mueller-lithograph-schlick-after-himselfFree Image from public domain licenseIsaac Dalby. Stipple engraving by J. Thomson, 1827, after W. Derby after J. J. Halls, 1817. https://www.rawpixel.com/image/14019118/image-cartoon-face-personFree Image from public domain licenseCourt House. Chambersburg, Franklin Co., PA. by Charles Eugene Meyer and Robert Newell https://www.rawpixel.com/image/14274153/image-plant-person-treeFree Image from public domain licenseSaint Mary (the Blessed Virgin) and Saint Joseph with the Christ Child. Lithograph by F. Piloty after Sir A. van Dyck. https://www.rawpixel.com/image/14017267/image-face-christ-personFree Image from public domain licenseRené Descartes. Line engraving by E. Desrochers after F. Hals, 1649. https://www.rawpixel.com/image/14018456/rene-descartes-line-engraving-desrochers-after-hals-1649Free Image from public domain licenseDrie mensen bij een opstelling met een kijkpunt op een blokje (c. 1975 - c. 1976) by Rijksmuseum Afdeling Beeld https://www.rawpixel.com/image/13753983/photo-image-face-people-clothingFree Image from public domain licenseSiam [Thailand]. Photograph, 1981, from a negative by John Thomson, 1866. https://www.rawpixel.com/image/13978405/siam-thailand-photograph-1981-from-negative-john-thomson-1866Free Image from public domain licenseAlexander Small. Mezzotint by J. Faber, junior, after B. Dandridge. https://www.rawpixel.com/image/14003680/alexander-small-mezzotint-faber-junior-after-dandridgeFree Image from public domain licenseJohn Bird. Stipple engraving by C. Knight, 1825, after Fowler. https://www.rawpixel.com/image/14001387/john-bird-stipple-engraving-knight-1825-after-fowlerFree Image from public domain licenseShuster , Iran: doorway of a shop with two older men in turbans seated next to baskets of produce. Photograph, 1910/1920 . https://www.rawpixel.com/image/13978229/photo-image-face-person-clothingFree Image from public domain licenseTimothy Davis by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317804/timothy-davis-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseJames M. Cavanaugh by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318360/james-cavanaugh-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseJohn Brown [Bruno]. Line engraving by J. Adam after J. Cagnoni. https://www.rawpixel.com/image/13976812/john-brown-bruno-line-engraving-adam-after-cagnoniFree Image from public domain licenseJohn Brown [Bruno]. Line engraving by J. Caldwall after J. Donaldson. https://www.rawpixel.com/image/13975932/john-brown-bruno-line-engraving-caldwall-after-donaldsonFree Image from public domain licenseMusaeum historicum et physicum ... In primo illustrium literis virorum imagines ad vivum expressȩ continentur, additis… https://www.rawpixel.com/image/14000443/image-cartoon-face-personFree Image from public domain licenseUnidentified young man posed at table with books and cap, standing by C Hart https://www.rawpixel.com/image/14284696/unidentified-young-man-posed-table-with-books-and-cap-standing-hartFree Image from public domain licenseVrouw met poes (1679 - 1728) by Johannes Gronsveld and Abraham Bloemaert https://www.rawpixel.com/image/13780795/vrouw-met-poes-1679-1728-johannes-gronsveld-and-abraham-bloemaertFree Image from public domain licensePresident Barack Obama poses with Usain Bolt, the fastest runner in the world, backstage following a "Young Leaders of the… https://www.rawpixel.com/image/4050871/image-face-public-domain-personFree Image from public domain licenseOwen Lovejoy by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316957/owen-lovejoy-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseNorthern CardinalFemale northern cardinal observed at Pool 9 of Upper Mississippi River National Wildlife and Fish Refuge in… https://www.rawpixel.com/image/4028591/photo-image-bird-animalFree Image from public domain licenseAntoine Ferrein. Stipple engraving by A. Tardieu after J. B. Pigalle. https://www.rawpixel.com/image/14011476/antoine-ferrein-stipple-engraving-tardieu-after-pigalleFree Image from public domain licenseBack of head showing skin disease. Coloured stipple engraving by S. Tresca after Moreau-Valvile, c. 1806. https://www.rawpixel.com/image/13959961/image-face-person-artFree Image from public domain licenseSir Humphry Davy. Stipple engraving by R. Hicks, 1829, after T. Phillips. https://www.rawpixel.com/image/13981083/sir-humphry-davy-stipple-engraving-hicks-1829-after-phillipsFree Image from public domain licenseUnidentified man with goatee, moustache and muttonchops, seated, in profile by Henry Maull and Co https://www.rawpixel.com/image/14306857/photo-image-face-person-clothingFree Image from public domain licenseWilliam Saunders. Stipple engraving by H. Meyer, 1817, after R. W. Satchwell. https://www.rawpixel.com/image/13997318/william-saunders-stipple-engraving-meyer-1817-after-satchwellFree Image from public domain licenseJean Chappé d'Auteroche. Line engraving by J. Corner, 1791. https://www.rawpixel.com/image/14013801/jean-chappe-dauteroche-line-engraving-corner-1791Free Image from public domain licenseJohn Townsend. Stipple engraving by R. H. Dyer, 1827, after W. Behnes, 1824. https://www.rawpixel.com/image/13999285/john-townsend-stipple-engraving-dyer-1827-after-behnes-1824Free Image from public domain licenseCrawford, Manager of the L.T.C. Depot, Dardanelles by Dr William Robertson https://www.rawpixel.com/image/14313103/crawford-manager-the-ltc-depot-dardanelles-william-robertsonFree Image from public domain licenseAlexander Russell. Line engraving by T. Trotter after Sir N. Dance-Holland. https://www.rawpixel.com/image/13973502/alexander-russell-line-engraving-trotter-after-sir-dance-hollandFree Image from public domain licenseA garrotted man in a dungeon next to a burning candle. Etching by F. de Goya y Lucientes. https://www.rawpixel.com/image/14002002/image-cartoon-face-personFree Image from public domain licenseSaint Jerome in his study. Oil painting by a follower of Albrecht Dürer. https://www.rawpixel.com/image/13955064/saint-jerome-his-study-oil-painting-follower-albrecht-durerFree Image from public domain license