Christiaan Huygens [Hugenius]. Line engraving by F. Ottens. https://www.rawpixel.com/image/14016543/christiaan-huygens-hugenius-line-engraving-ottensFree Image from public domain licensePortret van de schilder J.W. van Borselen (1881 - 1885) by Maurits Verveer and Valadon and Cie Boussod https://www.rawpixel.com/image/13756063/photo-image-paper-face-personFree Image from public domain licenseCatherine II in lavish dress, seated in an armchair; crown on a table in the background. Stipple print by C. Watson after A.… https://www.rawpixel.com/image/13979247/image-background-face-personFree Image from public domain licensePortrait of an unidentified woman by Henry Herschel Hay Cameron https://www.rawpixel.com/image/14285227/portrait-unidentified-woman-henry-herschel-hay-cameronFree Image from public domain licenseWedding portrait of Charles Sherwood Stratton and Livinia Warren Stratton https://www.rawpixel.com/image/14310251/wedding-portrait-charles-sherwood-stratton-and-livinia-warren-strattonFree Image from public domain licenseUnidentified bearded man, in vignette-style by Ye Rose Studio https://www.rawpixel.com/image/14307909/unidentified-bearded-man-vignette-style-rose-studioFree Image from public domain licenseJohn Abernethy. Soft-ground etching by W. Daniell after G. Dance. https://www.rawpixel.com/image/13990847/john-abernethy-soft-ground-etching-daniell-after-danceFree Image from public domain licenseFotoreproductie van het schilderij 'Venus van Urbino' door Titiaan (c. 1870 - c. 1890) by Brogi and Titiaan https://www.rawpixel.com/image/13757527/photo-image-paper-face-personFree Image from public domain licenseLorenzo Martini. Lithograph by Petronilla, 1845, after himself. https://www.rawpixel.com/image/14020829/lorenzo-martini-lithograph-petronilla-1845-after-himselfFree Image from public domain licenseWilliam Thomson, Baron Kelvin. Stipple engraving by C. H. Jeens, 1876. https://www.rawpixel.com/image/13982109/william-thomson-baron-kelvin-stipple-engraving-jeens-1876Free Image from public domain licenseSaint Philip Neri. Engraving by A.G. Faldoni after T. Conca. https://www.rawpixel.com/image/14021131/saint-philip-neri-engraving-ag-faldoni-after-concaFree Image from public domain licenseSydenham Moore by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317361/sydenham-moore-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseBoth Sides, the Cause by James F Gibson and Mathew B Brady https://www.rawpixel.com/image/14278177/both-sides-the-cause-james-gibson-and-mathew-bradyFree Image from public domain licenseGlacier on lake, dark background. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298859/free-photo-image-animal-bird-cc0Free Image from public domain licenseLouis Pasteur, with two dogs (referring to his work on rabies), a palm and a snake around a bowl (indicating achievement in… https://www.rawpixel.com/image/13952085/image-dog-cartoon-faceFree Image from public domain licenseA musician playing the dholak (double sided drum). Gouache painting by an Indian artist. https://www.rawpixel.com/image/13962119/image-cartoon-face-personFree Image from public domain licensePortrait of a Lady by Achille Devéria and Théodule Devéria https://www.rawpixel.com/image/14272119/portrait-lady-achille-deveria-and-theodule-deveriaFree Image from public domain licenseA man performing a painful operation on a woman's tooth. Oil painting by Pieter van Laer, 16--. https://www.rawpixel.com/image/13985246/image-face-person-artFree Image from public domain licenseSaint Lucy. Line engraving by E. Fabbrini after F. Calendi after C. Dolci. https://www.rawpixel.com/image/13991438/saint-lucy-line-engraving-fabbrini-after-calendi-after-dolciFree Image from public domain licenseHints designed to promote beneficence, temperance, and medical science / By John Coakley Lettsom. https://www.rawpixel.com/image/14000862/image-face-person-medicineFree 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 licenseBeautiful smiling girl, as she carries a heavy load of water home. Original public domain image from Flickr https://www.rawpixel.com/image/3382433/free-photo-image-beautiful-black-carryingFree Image from public domain licenseBull bison walks in the snowy road near Midway Geyser Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4038176/photo-image-dog-animalFree Image from public domain licenseAlice Lone Bear, Sioux by Adolph F Muhr and Frank A Rinehart https://www.rawpixel.com/image/14246454/alice-lone-bear-sioux-adolph-muhr-and-frank-rinehartFree Image from public domain licensePhotograph of Painting of a Native American (signed Gerald Cassidy) by Louis Fleckenstein https://www.rawpixel.com/image/14253814/image-face-frame-personFree Image from public domain licenseSir Aurel Stein. Photograph by J. Thomson, The Grosvenor Studios, 1909. https://www.rawpixel.com/image/13991742/sir-aurel-stein-photograph-thomson-the-grosvenor-studios-1909Free Image from public domain licenseThe head and shoulders of a woman with brown hair wearing a high chignon attached to her natural hair which is decorated… https://www.rawpixel.com/image/13960234/image-face-flowers-personFree Image from public domain licenseCirce. Engraving by W. Sharp, 1780, after J. Boydell after D. Zampieri, il Domenichino. https://www.rawpixel.com/image/13981338/image-cartoon-face-personFree Image from public domain licenseLord Durham, surrounded by schoolboy politicians, is victimised in a game and jostled by Lord Melbourne. Coloured lithograph… https://www.rawpixel.com/image/13953921/image-cartoon-face-peopleFree 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 licenseAttitudes Passionnelles Hallucinations de l'Ouie by Paul Marie Léon Regnard https://www.rawpixel.com/image/14315039/attitudes-passionnelles-hallucinations-louie-paul-marie-leon-regnardFree Image from public domain licenseInfant feeding by artificial means : a scientific and practical treatise on the dietetics of infancy / by S.H. Sadler. https://www.rawpixel.com/image/13992434/image-face-person-artFree Image from public domain licenseA prisoner sits in his cell and carves the Crucifixion in the wall with a nail. Engraving by F. Bacon after E.H. Wehnert. https://www.rawpixel.com/image/14021524/image-face-jesus-christ-personFree Image from public domain licenseSarah Malcolm in Newgate Prison shortly before her execution. Engraving by T. Cook after W. Hogarth. https://www.rawpixel.com/image/14014737/image-cartoon-face-personFree Image from public domain licenseFreeman H. Morse by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316625/freeman-morse-james-earle-mcclees-and-julian-vannersonFree Image from public domain license3rd Air Support Operations Squadron conducts airborne training at JBERU.S. Air Force Senior Airman Jonathan Valdes Montijo… https://www.rawpixel.com/image/4224731/photo-image-face-public-domain-peopleFree Image from public domain licenseAugust, Ritter von Schaeffer. Lithograph by J. Kriehuber, 1842. https://www.rawpixel.com/image/14021402/august-ritter-von-schaeffer-lithograph-kriehuber-1842Free Image from public domain licenseBezoekers bekijken de expositie (c. 1969) by Rijksmuseum Afdeling Beeld https://www.rawpixel.com/image/13754000/bezoekers-bekijken-expositie-c-1969-rijksmuseum-afdeling-beeldFree Image from public domain license