A scholar-alchemist pores over a book, searching for inspiration. Etching by F. Basan after D. Teniers the younger. https://www.rawpixel.com/image/14012178/image-face-person-booksFree Image from public domain licenseOfficier der O.I. Infanterie (1835 - 1850) by Albertus Verhoesen and Johannes Paulus Houtman https://www.rawpixel.com/image/13748593/image-paper-cartoon-faceFree Image from public domain licenseSir Charles William Siemens. Photograph by Lock & Whitfield. https://www.rawpixel.com/image/14011562/sir-charles-william-siemens-photograph-lock-whitfieldFree Image from public domain licenseSores and abcesses covering the face and body of a man. Watercolour by C. D'Alton, ca. 1853. https://www.rawpixel.com/image/13979838/image-face-person-artFree Image from public domain licenseA young man holding his hand to his heart, emanating insensible perspiration. Colour stipple engraving by J. Pass, 1794… https://www.rawpixel.com/image/13953266/image-heart-face-handFree Image from public domain licenseFig. 58 by Guillaume Benjamin Duchenne and Adrien Alban Tournachon https://www.rawpixel.com/image/14316991/fig-guillaume-benjamin-duchenne-and-adrien-alban-tournachonFree Image from public domain licenseCharles Lucien Jules Laurent Bonaparte, Prince de Canino. Pencil drawing by C. E. Liverati, 1841. https://www.rawpixel.com/image/13973029/image-paper-cartoon-faceFree Image from public domain licenseThe Gillmans of Highgate : with letters from Samuel Taylor Coleridge. &c., illustrated with views and portraits, being a… https://www.rawpixel.com/image/14016631/image-face-person-artFree Image from public domain licenseA man in a fur cap holding a drinking glass in one hand and a pipe in the other. Mezzotint after G. van Herp , mid 17th… https://www.rawpixel.com/image/13999591/image-cartoon-face-handFree Image from public domain licenseThe 'Madonna della Sedia', the Virgin with Child and Saint John the Baptist. Coloured engraving after Raphael, 1512-15. https://www.rawpixel.com/image/13967287/image-face-jesus-christ-personFree Image from public domain licenseJohn Ayrton Paris. Mezzotint by S. Bellin, 1840, after C. Skottowe, 1838. https://www.rawpixel.com/image/14002397/john-ayrton-paris-mezzotint-bellin-1840-after-skottowe-1838Free Image from public domain licenseJohannes Phocylides Holwarda. Line engraving by C. de Passe after H. Lamminga. https://www.rawpixel.com/image/13977494/johannes-phocylides-holwarda-line-engraving-passe-after-lammingaFree Image from public domain licenseSaint Mary Magdalen. Engraving by V. Vanni after L. Lorenzi after G.F. Barbieri, il Guercino. https://www.rawpixel.com/image/13966126/image-cartoon-face-personFree Image from public domain licenseJean-Louis-Armand de Quatrefages de Bréau. Wood engraving. https://www.rawpixel.com/image/13981697/jean-louis-armand-quatrefages-breau-wood-engravingFree Image from public domain licenseW.B. Randall. Central Square, N.Y. by George Kendall Warren https://www.rawpixel.com/image/14318860/wb-randall-central-square-ny-george-kendall-warrenFree Image from public domain licenseLord John Russell, as an auctioneer with Sir Robert Peel as his clerk, auction a bundle of papers inscribed "law of libel"… https://www.rawpixel.com/image/13955102/image-paper-cartoon-faceFree Image from public domain licenseHonorable Josceline Amherst by Ronald Ruthven Leslie Melville https://www.rawpixel.com/image/14323269/honorable-josceline-amherst-ronald-ruthven-leslie-melvilleFree Image from public domain licenseSir Richard Croft. Stipple engraving by W. Holl after Sir G. Hayter, 1801. https://www.rawpixel.com/image/14017873/sir-richard-croft-stipple-engraving-holl-after-sir-hayter-1801Free Image from public domain licenseJohann Crato von Craftheim. Line engraving by P. Galle, 1595. https://www.rawpixel.com/image/14008429/johann-crato-von-craftheim-line-engraving-galle-1595Free Image from public domain licenseA soldier returns and is greeted with great affection by his wife and child. Stipple engraving by L. Darcis after J.B.… https://www.rawpixel.com/image/13981112/image-face-person-artFree Image from public domain licenseHenry Clutterbuck. Stipple engraving by J. Cochran, 1838, after H. Room. https://www.rawpixel.com/image/14018674/henry-clutterbuck-stipple-engraving-cochran-1838-after-roomFree Image from public domain licenseGroup of Three Italian Street Musicians in front of 21, Quai Bourbon, Paris by Charles Nègre https://www.rawpixel.com/image/14255011/photo-image-face-person-artFree Image from public domain licenseBuste van een man met baard, naar rechts (1655 - 1700) by Jan van Somer https://www.rawpixel.com/image/13755672/buste-van-een-man-met-baard-naar-rechts-1655-1700-jan-van-somerFree Image from public domain licenseBiologist Kris Spaeth Photographs Butterfly MilkweedVibrant butterfly milkweed is in bloom at Sherburne National Wildlife… https://www.rawpixel.com/image/4025634/photo-image-flower-plant-personFree Image from public domain licensePortret van een oude man met geprononceerde kin (1644 - 1652) by Wenceslaus Hollar and Leonardo da Vinci https://www.rawpixel.com/image/13769653/image-paper-cartoon-faceFree Image from public domain licensePortrait of Bernardus de Bosch I, Poet and Art Patron in Amsterdam (1743) by Jan Maurits Quinkhard https://www.rawpixel.com/image/13796019/image-face-frame-personFree Image from public domain licenseMan met hangsnor en naar voren hangende muts (1758) by J G Schleuen https://www.rawpixel.com/image/13785162/man-met-hangsnor-naar-voren-hangende-muts-1758-schleuenFree Image from public domain licenseJean le Rond d'Alembert. Line engraving by D. Jenkins after A. Pujos. https://www.rawpixel.com/image/14007160/jean-rond-dalembert-line-engraving-jenkins-after-pujosFree Image from public domain licenseCharles A. Lockhart Robertson. Photograph by G. Jerrard, 1881. https://www.rawpixel.com/image/14016442/charles-lockhart-robertson-photograph-jerrard-1881Free Image from public domain licensePortret van de Hongaarse dirigent Artúr Nikisch, (zittend) en de Russische componist/dirigent Aleksandr Borisovich Chessin.… https://www.rawpixel.com/image/13757965/photo-image-face-hand-personFree Image from public domain licenseA Hindu ascetic, or holy man: with a rod piercing his cheeks, and holding some ceremonial objects. Wood engraving, ca. 1890 . https://www.rawpixel.com/image/13960356/image-cartoon-face-personFree Image from public domain licenseFriedrich Heinrich Alexander von Humboldt. Lithograph by C. Wildt after C. Begas, 1840. https://www.rawpixel.com/image/13994123/image-face-person-artFree Image from public domain licenseAlbert Edward, Prince of Wales. Photograph by Mayall, 1862. https://www.rawpixel.com/image/14007440/albert-edward-prince-wales-photograph-mayall-1862Free Image from public domain licenseCamera drawing, vintage object illustration vector. Free public domain CC0 image. https://www.rawpixel.com/image/6489205/vector-sticker-vintage-public-domainFree Vector from public domain licenseVincenzo Dandolo. Stipple engraving by J. D. Nargeot after Augustine Fauchery. https://www.rawpixel.com/image/14001988/vincenzo-dandolo-stipple-engraving-nargeot-after-augustine-faucheryFree Image from public domain licenseFree northern giraffe closeup on green tree background image, public domain animal CC0 photo. https://www.rawpixel.com/image/5923310/photo-image-public-domain-tree-plantFree Image from public domain licenseFélix Hippolyte, Baron Larrey. Lithograph by C. Fuhr after A.-R. Trinquart. https://www.rawpixel.com/image/13989538/felix-hippolyte-baron-larrey-lithograph-fuhr-after-a-r-trinquartFree Image from public domain licenseA brief account of Mr. Valentine Greatrak's, and divers of the strange cures by him lately performed / Written by himself in… https://www.rawpixel.com/image/14009943/image-cartoon-face-personsFree Image from public domain licenseThe medical profession in all countries, containing photographic portraits from life. https://www.rawpixel.com/image/13982962/photo-image-face-frame-personFree Image from public domain licensePitre-Chevalier, h[omm]e de lettres by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14273346/pitre-chevalier-homme-lettres-nadar-gaspard-felix-tournachonFree Image from public domain licenseEtienne Geoffroy Saint-Hilaire. Lithograph by J. Boilly, 1821. https://www.rawpixel.com/image/14001639/etienne-geoffroy-saint-hilaire-lithograph-boilly-1821Free Image from public domain license