Augustin Louis, Baron Cauchy. Lithograph by Z. Belliard after J. Roller. https://www.rawpixel.com/image/14015769/augustin-louis-baron-cauchy-lithograph-belliard-after-rollerFree Image from public domain licenseFrancis Shillington-Scales. Photograph by J. Palmer Clarke. https://www.rawpixel.com/image/14021462/francis-shillington-scales-photograph-palmer-clarkeFree Image from public domain licenseRenwick Williams, a man convicted of wounding women. Reproduction of a stipple engraving. https://www.rawpixel.com/image/14003461/image-cartoon-face-personFree Image from public domain licenseOliver Goldsmith. Line engraving by J. G. Walker, 1801, after Sir J. Reynolds. https://www.rawpixel.com/image/13990631/oliver-goldsmith-line-engraving-walker-1801-after-sir-reynoldsFree Image from public domain licenseNathaniel Cotton. Line engraving by W. H. Worthington, 1820, after J. Thurston. https://www.rawpixel.com/image/13974980/nathaniel-cotton-line-engraving-worthington-1820-after-thurstonFree Image from public domain licenseFree open book with flower inside closeup image, public domain CC0 photo. https://www.rawpixel.com/image/5906789/photo-image-flowers-book-public-domainFree Image from public domain licenseUnidentified baby wearing a long gown, seated on a couch by Peter S Weaver https://www.rawpixel.com/image/14307805/unidentified-baby-wearing-long-gown-seated-couch-peter-weaverFree Image from public domain licenseAlfred 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 licenseEdward Joy Morris by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318190/edward-joy-morris-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseFour women with knives and wooden paddles are cutting and beating the wool and a man is putting it through a combing device.… https://www.rawpixel.com/image/13974364/image-person-art-circleFree Image from public domain licenseFree Jeju Jocheon Swiss Village in South Korea image, public domain CC0 photo. https://www.rawpixel.com/image/5909870/photo-image-background-public-domain-orangeFree Image from public domain licenseSaint Luke, painting a picture of the Virgin, watched by the painter Raphael. Engraving by Cornelis Bloemaert. https://www.rawpixel.com/image/14013037/image-face-person-artFree Image from public domain licenseUnidentified doctor or clergyman with full beard sans moustache, standing by Jeremiah Gurney and Son https://www.rawpixel.com/image/14308429/image-face-person-artFree Image from public domain licensePortret van Georg Gutthäter (1669 - 1695) by Georg Thomas Gutthäter https://www.rawpixel.com/image/13765144/portret-van-georg-gutthater-1669-1695-georg-thomas-gutthaterFree Image from public domain licenseMichel Eugène Chevreul. Photogravure by Krakow after G. F. Tournachon [Nadar], 1886. https://www.rawpixel.com/image/14012722/image-paper-cartoon-faceFree Image from public domain licenseFree baseball in glove on grass closeup image, public domain sport CC0 photo. https://www.rawpixel.com/image/5922200/photo-image-public-domain-green-freeFree Image from public domain licenseUnidentified man with moustache & muttonchops, holding gloves in one hand, a hat in the other by F Schwarzschild https://www.rawpixel.com/image/14285264/image-face-hand-personFree Image from public domain licenseSir David Brewster. Reproduction of pen drawing by A. Croquis [D. Maclise]. https://www.rawpixel.com/image/14012033/sir-david-brewster-reproduction-pen-drawing-croquis-d-macliseFree Image from public domain licenseLouis Pasteur, proponent of the 'germ' theory of disease. Oil painting after A. Edelfelt. https://www.rawpixel.com/image/13951793/image-face-frame-personFree Image from public domain licenseSamuel Langhorne Clemens - "Mark Twain" by Jeremiah Gurney and Son https://www.rawpixel.com/image/14291676/samuel-langhorne-clemens-mark-twain-jeremiah-gurney-and-sonFree Image from public domain licenseSimon Pauli. Line engraving by A. Haelwegh, 1666, after C. van Mander III. https://www.rawpixel.com/image/14016199/simon-pauli-line-engraving-haelwegh-1666-after-van-mander-iiiFree Image from public domain licenseFamily portrait: mother, father and two children by B F Green https://www.rawpixel.com/image/14305231/family-portrait-mother-father-and-two-children-greenFree Image from public domain licenseArtistic poses plate III: a woman standing. Lithograph by Robert J. Colenso. https://www.rawpixel.com/image/13952399/artistic-poses-plate-iii-woman-standing-lithograph-robert-colensoFree Image from public domain licenseElizabeth Fry. Engraving by J. J. Hinchliff after Mary Martha Pearson. https://www.rawpixel.com/image/13999263/elizabeth-fry-engraving-hinchliff-after-mary-martha-pearsonFree Image from public domain licenseObservations diverses sur la sterilité, perte de fruict, foecondite, accouchements et maladies des femmes et enfants… https://www.rawpixel.com/image/13985619/image-cartoon-face-personFree Image from public domain licensePortret van Jacques Stella (1646 - 1697) by Claudine Stella https://www.rawpixel.com/image/13782190/portret-van-jacques-stella-1646-1697-claudine-stellaFree Image from public domain licenseTwo people walking across sand dunes in distance, black and white. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3294204/free-photo-image-earth-adventure-animalFree Image from public domain licenseGeorge S. Houston by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318227/george-houston-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseA barber shaving a man while another man distracts him by reading from a newspaper entitled "The true sun". Coloured… https://www.rawpixel.com/image/13965670/image-cartoon-face-plantFree Image from public domain licenseLouis Pasteur. Wood engraving by A. Leveillé after P. Dubois, 1884. https://www.rawpixel.com/image/13989675/louis-pasteur-wood-engraving-leveille-after-dubois-1884Free Image from public domain licenseAn old man sitting cross-legged on the ground next to his crutches. Etching by C. Jacque. https://www.rawpixel.com/image/14014900/image-paper-face-personFree Image from public domain licenseMathieu de L'Obel. Pen drawing by J. Brand, 1793, after F. Delaram, 1615. https://www.rawpixel.com/image/14019206/mathieu-lobel-pen-drawing-brand-1793-after-delaram-1615Free Image from public domain licenseFriedrich Heinrich Alexander von Humboldt. Line engraving by A. Krausse, 1814. https://www.rawpixel.com/image/13991838/friedrich-heinrich-alexander-von-humboldt-line-engraving-krausse-1814Free Image from public domain licenseWilliam Barrett, aged 31. Stipple engraving by W. Walker after J. van Rymsdick. https://www.rawpixel.com/image/13981785/william-barrett-aged-31-stipple-engraving-walker-after-van-rymsdickFree Image from public domain licenseGeorges-Léopold-Chrétien-Frédéric-Dagobert, Baron Cuvier. Lithograph, after N. Jacques. https://www.rawpixel.com/image/14017720/image-paper-face-personFree Image from public domain licenseSamuel Solomon. Stipple engraving by J. Pass after Turmeau. https://www.rawpixel.com/image/13995359/samuel-solomon-stipple-engraving-pass-after-turmeauFree Image from public domain licensePhilip Allen by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14317422/philip-allen-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseSir Samuel Garth. Stipple engraving by W. Read after Sir G. Kneller. https://www.rawpixel.com/image/13990630/sir-samuel-garth-stipple-engraving-read-after-sir-knellerFree Image from public domain licenseA crowded crosswalk in Tokyo at night. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283996/free-photo-image-japan-photography-city-streetFree Image from public domain licenseFree Sheikh Zayed Grand Mosque, Dubai photo, public domain travel CC0 image. https://www.rawpixel.com/image/5924239/photo-image-public-domain-free-cityFree Image from public domain license