Sir Charles Wheatstone. Stipple engraving by C. Cook after W.E. Kilburn. https://www.rawpixel.com/image/14009738/sir-charles-wheatstone-stipple-engraving-cook-after-we-kilburnFree Image from public domain licenseNicolas-René-Dufriche, Baron Desgenettes. Stipple engraving. https://www.rawpixel.com/image/14007391/nicolas-rene-dufriche-baron-desgenettes-stipple-engravingFree Image from public domain licenseA water seller carries a canister of water with glasses and a jug on a small tray. Coloured lithograph. https://www.rawpixel.com/image/13959546/image-cartoon-face-personFree Image from public domain licensePortret van Van Houten (1797) by Johannes Cornelis Mertens https://www.rawpixel.com/image/13791772/portret-van-van-houten-1797-johannes-cornelis-mertensFree Image from public domain licenseWarner L. Underwood by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317459/warner-underwood-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseLyman Trumbull by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316983/lyman-trumbull-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseSaint John the Baptist. Engraving by S. de La Vallée after Raphael. https://www.rawpixel.com/image/13987618/saint-john-the-baptist-engraving-vallee-after-raphaelFree Image from public domain licenseJean-Baptiste-André Dumas. Lithograph by J.B.A. Lafosse after P. Petit. https://www.rawpixel.com/image/14010651/jean-baptiste-andre-dumas-lithograph-jba-lafosse-after-petitFree Image from public domain licenseGroup portrait on the beach, Block Island by Byram Woodhead https://www.rawpixel.com/image/14276426/group-portrait-the-beach-block-island-byram-woodheadFree Image from public domain licenseNouvelles démonstrations d'accouchemens / Avec des planches en taille-douce, accompagnées d'un texte raisonné propre à en… https://www.rawpixel.com/image/14012721/image-cartoon-face-handFree Image from public domain licenseKing George III. Soft-ground etching by W. Daniell after G. Dance the younger, 1793. https://www.rawpixel.com/image/14010199/image-cartoon-face-personFree Image from public domain licenseRichard Quain, surgeon at University College Hospital, London. Wood engraving by R. Taylor, 1887. https://www.rawpixel.com/image/14011712/image-face-person-artFree Image from public domain licenseA vegetable farmer has the panniers on his donkey loaded with vegetables. Coloured lithograph by La Sirena. https://www.rawpixel.com/image/13965137/image-horse-cartoon-faceFree Image from public domain licenseThe Last Great Mogul. Bahadur Shah II, Son of Akbar Shah II, Grandson of Shah Alum II, Great Grandson of Arurangzeb, titular… https://www.rawpixel.com/image/14261428/photo-image-face-person-artFree Image from public domain licensePortret van actrice Camilla Spira (1930 - 1950) by Lindner https://www.rawpixel.com/image/13757666/portret-van-actrice-camilla-spira-1930-1950-lindnerFree Image from public domain licenseAdmiral Evans leaving the Mayflower after calling on the President, Naval Review, Oyster Bay. by Hawley C White Company https://www.rawpixel.com/image/14301766/image-person-ocean-seaFree Image from public domain licenseSaint Thomas. Engraving after M.A. Raimondi after Raphael. https://www.rawpixel.com/image/14016962/saint-thomas-engraving-after-ma-raimondi-after-raphaelFree Image from public domain licenseSelf-portrait with Saskia (1685 - 1759) by Rembrandt van Rijn, Rembrandt van Rijn and Jean de Bary https://www.rawpixel.com/image/13779082/image-paper-face-frameFree Image from public domain licenseSuperficial blood vessels of the head and neck. Coloured mezzotint by J. F. Gautier D'Agoty, 1748. https://www.rawpixel.com/image/13959820/image-face-person-artFree Image from public domain licensePortrait of a Young Man, possibly Jacob Francken (1627-after 1656) (c. 1651) by Aelbert Cuyp https://www.rawpixel.com/image/13744460/image-face-person-artFree Image from public domain licenseDraupadi in disguise being induced to take a jar of liquor to Kichaka by Sudeshna. Chromolithograph by R. Varma. https://www.rawpixel.com/image/13961483/image-face-person-artFree Image from public domain licenseFree three dogs in party hats smiling image, public domain animal CC0 photo. https://www.rawpixel.com/image/5928229/photo-image-background-public-domain-pinkFree Image from public domain licenseFree couple holding hands photo, public domain relationship CC0 image. https://www.rawpixel.com/image/5923921/photo-image-public-domain-free-holding-handsFree Image from public domain licensePrehensile-tailed Porcupine (2009) by Mehgan Murphy. Original from Smithsonian's National Zoo. Digitally enhanced by… https://www.rawpixel.com/image/3061716/free-photo-image-amazing-animal-artFree Image from public domain licenseLouis Pasteur, standing, holding eyeglasses, with chemical apparatus and books. Chromolithograph. https://www.rawpixel.com/image/13951289/image-cartoon-face-personFree Image from public domain licenseThe art dealer and publisher Clement de Jonghe by Rembrandt van Rijn https://www.rawpixel.com/image/8924123/the-art-dealer-and-publisher-clement-jongheFree Image from public domain licenseMusahar women collecting ferns, Sauraha, Chitwan District, Nepal, November 2017. https://www.rawpixel.com/image/6198545/photo-image-public-domain-person-womanFree Image from public domain licenseRubé, peintre, decorateur by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14272508/rube-peintre-decorateur-nadar-gaspard-felix-tournachonFree Image from public domain licenseOutlines of lectures on mental diseases / By Alexander Morison. https://www.rawpixel.com/image/14006911/outlines-lectures-mental-diseases-alexander-morisonFree Image from public domain licenseEyes expressing an energetic character, according to Lavater's system of physiognomy. Drawing, c. 1794. https://www.rawpixel.com/image/13994960/image-paper-cartoon-faceFree Image from public domain licenseDe dwerg Blasius Rauchmantl als alchemist, ca. 1710 (1705 - 1715) by Martin Engelbrecht https://www.rawpixel.com/image/13745912/image-paper-cartoon-faceFree Image from public domain licenseTwo musicians playing the shehnai , an Indian wind instrument. Gouache painting by an Indian artist. https://www.rawpixel.com/image/13964129/image-cartoon-face-personFree Image from public domain licensePierre Clément Grignon. Line engraving by S. C. Miger, 1776, after A. Pujos. https://www.rawpixel.com/image/14017473/pierre-clement-grignon-line-engraving-miger-1776-after-pujosFree Image from public domain licenseCharles Lucien Jules Laurent Bonaparte, Prince de Canino. Lithograph by D. Castellini after C. E. Liverati. https://www.rawpixel.com/image/14001055/image-paper-face-personFree Image from public domain licensePortret van Isabella d'Este (1619 - 1675) by Lucas Vorsterman I, Peter Paul Rubens, Titiaan and Peter Paul Rubens https://www.rawpixel.com/image/13779905/image-paper-face-personFree Image from public domain license