Tobias George Smollett. Engraving by J. A. Dean, 1820, after Sir J. Reynolds. https://www.rawpixel.com/image/13990268/tobias-george-smollett-engraving-dean-1820-after-sir-reynoldsFree Image from public domain license
Richard 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 license
Francis Barrett. Stipple engraving by D. Orme after himself. https://www.rawpixel.com/image/13996130/francis-barrett-stipple-engraving-orme-after-himselfFree Image from public domain license
Thomas Henry Huxley. Colour lithograph by C. Pellegrini [Ape], 1871. https://www.rawpixel.com/image/13974162/thomas-henry-huxley-colour-lithograph-pellegrini-ape-1871Free Image from public domain license
Charles Leigh. Line engraving by P. Rothwell, 1812, after W. Faithorne, 1685. https://www.rawpixel.com/image/13971040/charles-leigh-line-engraving-rothwell-1812-after-faithorne-1685Free Image from public domain license
Christian Albert Theodor Billroth. Photograph by F. Luckhardt. https://www.rawpixel.com/image/14003802/christian-albert-theodor-billroth-photograph-luckhardtFree Image from public domain license
Guillaume, Baron Dupuytren. Stipple engraving by A. Tardieu. https://www.rawpixel.com/image/13976395/guillaume-baron-dupuytren-stipple-engraving-tardieuFree Image from public domain license
Johann Wolfgang von Goethe. Etching by W. Unger after G. O. May, 1779. https://www.rawpixel.com/image/14020683/johann-wolfgang-von-goethe-etching-unger-after-may-1779Free Image from public domain license
Jean Hermann. Stipple engraving by A. Tardieu after C. Guérin. https://www.rawpixel.com/image/14008672/jean-hermann-stipple-engraving-tardieu-after-guerinFree Image from public domain license
William St Clair. Mezzotint by S. W. Reynolds, 1820, after J. Lonsdale. https://www.rawpixel.com/image/13981365/william-clair-mezzotint-reynolds-1820-after-lonsdaleFree Image from public domain license
Sir Humphry Davy. Stipple engraving by W. Walker, 1830, after J. Jackson, 1823. https://www.rawpixel.com/image/13995330/sir-humphry-davy-stipple-engraving-walker-1830-after-jackson-1823Free Image from public domain license
Claude-François Duchanoy. Photograph after Jean-Baptiste Isabey, 1798. https://www.rawpixel.com/image/13981780/claude-francois-duchanoy-photograph-after-jean-baptiste-isabey-1798Free Image from public domain license
Robert Brown. Line engraving by C. Fox, 1837, after H. W. Pickersgill. https://www.rawpixel.com/image/14019095/robert-brown-line-engraving-fox-1837-after-pickersgillFree Image from public domain license
William Cadogan. Mezzotint by W. Dickinson, 1772, after R. E. Pine, 1769. https://www.rawpixel.com/image/13994775/william-cadogan-mezzotint-dickinson-1772-after-pine-1769Free Image from public domain license
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 license
A man with a herbal and a jar of theriac: an apothecary or pharmaceutical scholar. Oil painting. https://www.rawpixel.com/image/13987794/image-face-frame-personFree Image from public domain license
Donald Mars Morphett Ross. Photograph by Mee Cheung, Kulangsu, Amoy. https://www.rawpixel.com/image/14014718/donald-mars-morphett-ross-photograph-mee-cheung-kulangsu-amoyFree Image from public domain license
Thomas Linacre. Stipple engraving by H. Cook after W. Miller, 1810. https://www.rawpixel.com/image/14017550/thomas-linacre-stipple-engraving-cook-after-miller-1810Free Image from public domain license
Sir Isaac Newton. Line engraving by A. M. Monsaldi after E. Seeman, 1726. https://www.rawpixel.com/image/14013632/sir-isaac-newton-line-engraving-monsaldi-after-seeman-1726Free Image from public domain license
François Alexandre Frédéric, Duc de Larochefoucauld-Liancourt. Lithograph. https://www.rawpixel.com/image/14012376/francois-alexandre-frederic-duc-larochefoucauld-liancourt-lithographFree Image from public domain license
Louis 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 license
Mathieu 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 license
Friedrich 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 license
Asian man wearing glasses portrait, smiling face close up https://www.rawpixel.com/image/3933438/photo-image-face-people-glassesView license
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