Aureolus Theophrastus Bombastus von Hohenheim [Paracelsus]. Line engraving by J. B. Fosseyeux. https://www.rawpixel.com/image/13988457/image-face-person-artFree Image from public domain licenseNicolaus Copernicus. Line engraving by M. Deyerl after a design attributed to M. Basaiti, 1512. https://www.rawpixel.com/image/13995947/image-paper-face-personFree Image from public domain licenseDu Page County Centennial--Centennial of the photo, and art exhibit--Clarendon Hills Buczak. https://www.rawpixel.com/image/8650518/image-art-vintage-public-domainFree Image from public domain licenseUnidentified young girl in curls, standing, holding a hat, resting her other arm on a table with books on top by Joseph Brown https://www.rawpixel.com/image/14307783/image-face-person-booksFree Image from public domain licenseJohn Wallis. Line engraving by M. Burghers, 1699, after D. Loggan, 1678. https://www.rawpixel.com/image/13988483/john-wallis-line-engraving-burghers-1699-after-loggan-1678Free Image from public domain licenseWilliam Ingham. Line engraving by J. Burnet after J. Ramsay, 1817. https://www.rawpixel.com/image/13979943/william-ingham-line-engraving-burnet-after-ramsay-1817Free Image from public domain licenseA philosopher giving an astronomical lecture on an orrery. Mezzotint by W. Pether after J. Wright, ca. 1780. https://www.rawpixel.com/image/13999082/image-face-person-artFree Image from public domain licenseFree dog's head between wooden fence in black and white public domain CC0 photo. https://www.rawpixel.com/image/5912573/image-background-face-public-domainFree Image from public domain licenseUnidentified balding elderly man seated, holding a pince-nez https://www.rawpixel.com/image/14306482/unidentified-balding-elderly-man-seated-holding-pince-nezFree Image from public domain licenseFree close up common basilisk lizard's head image, public domain animal CC0 photo. https://www.rawpixel.com/image/5909903/image-background-public-domain-freeFree Image from public domain licenseBurchard David Mauchart. Mezzotint by J. J. Haid after W. D. Maier. https://www.rawpixel.com/image/13995299/burchard-david-mauchart-mezzotint-haid-after-maierFree Image from public domain licenseGalileo Galilei. Line engraving by O. Leoni, 1624, after himself []. https://www.rawpixel.com/image/13995275/galileo-galilei-line-engraving-leoni-1624-after-himselfFree Image from public domain licenseRené Descartes. Line engraving by J. Suyderhoeff after F. Hals, 1649. https://www.rawpixel.com/image/13983143/rene-descartes-line-engraving-suyderhoeff-after-hals-1649Free Image from public domain licensePortret van Nicolas de Verdun (1622) by Claude Mellan, Michel Lasne and Corbin https://www.rawpixel.com/image/13783259/portret-van-nicolas-verdun-1622-claude-mellan-michel-lasne-and-corbinFree Image from public domain licenseAureolus Theophrastus Bombastus von Hohenheim [Paracelsus]. Stipple engraving by W. Ridley after Q. Matsys. https://www.rawpixel.com/image/13998794/image-face-person-artFree Image from public domain licenseAnatomia, ex Caspari Bartholini parentis Institutionibus, omniumque recentiorum et propriis observationibus tertiùm ad… https://www.rawpixel.com/image/14014394/image-cartoon-face-personFree Image from public domain licenseJohn Gerard. Line engraving by T. Berry after J. Payne, 1633. https://www.rawpixel.com/image/13989328/john-gerard-line-engraving-berry-after-payne-1633Free Image from public domain licensePresident Barack Obama delivers remarks during a meeting with newly elected governors at Blair House in Washington, D.C.… https://www.rawpixel.com/image/4050600/photo-image-flower-art-plantFree Image from public domain licenseDorothy aged 3 yr 8 mo. Bernard 1 year. by Hemery and Company https://www.rawpixel.com/image/14307994/dorothy-aged-mo-bernard-year-hemery-and-companyFree Image from public domain licensePerson holding shells on beach. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303266/free-photo-image-accessory-animals-images-pictures-ankleFree Image from public domain licenseA vulture in blue sky. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3294627/free-photo-image-accipiter-animal-animals-images-picturesFree Image from public domain licenseJellyfish in dark blue ocean. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3304397/free-photo-image-jellyfish-animal-animals-images-picturesFree Image from public domain licenseA woman having her hair dressed by a male hairdresser who is assisted by a black servant-boy. Coloured lithograph by G.… https://www.rawpixel.com/image/13959539/image-cartoon-person-artFree Image from public domain licenseTwo black-footed ferret standing in soil looking at something. Original public domain image from Flickr https://www.rawpixel.com/image/3261393/free-photo-image-prairie-dog-weasel-animalFree Image from public domain licenseUnidentified small woman standing, holding a vase on a table by C Rummel https://www.rawpixel.com/image/14306451/unidentified-small-woman-standing-holding-vase-table-rummelFree Image from public domain licenseBlue splash texture in microscope. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298322/free-photo-image-texture-ocean-swirlFree Image from public domain licensePeople on sand, sunset coastline. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303725/free-photo-image-landscape-nature-ocean-birdFree Image from public domain licenseH.H. General the Maharaja Sindia of Gwalior, G.C.B., G.C.S.I. by Bourne and Shepherd https://www.rawpixel.com/image/14321965/image-face-person-clothingFree Image from public domain licenseA girl born without an arm. Reproduction, 1905, of a photograph by G. Kelly. https://www.rawpixel.com/image/13995288/girl-born-without-arm-reproduction-1905-photograph-kellyFree Image from public domain licenseSuper moon over mountain range at night. Original public domain image from Flickr https://www.rawpixel.com/image/4039093/photo-image-moon-space-natureFree Image from public domain licenseA member of a Mughal royal family . Watercolour drawing by an Indian artist. https://www.rawpixel.com/image/13965579/member-mughal-royal-family-watercolour-drawing-indian-artistFree Image from public domain licenseFree strawberry cake slice on plate image, public domain dessert CC0 photo. https://www.rawpixel.com/image/5907068/photo-image-background-public-domain-pinkFree Image from public domain licenseRobert Liston. Mezzotint by C. Turner, 1840, after himself. https://www.rawpixel.com/image/13974657/robert-liston-mezzotint-turner-1840-after-himselfFree Image from public domain licenseManed Wolf (2016) by Gil Myers. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060396/free-photo-image-dog-wolf-amazingFree Image from public domain licenseA Chinese man seated with his neck fastened in a cangue or pillory; a whip at his feet and houses in the background.… https://www.rawpixel.com/image/13965336/image-background-cartoon-faceFree Image from public domain licenseA dog looking at the burn scar of the forest. Original public domain image from Flickr https://www.rawpixel.com/image/4034901/photo-image-tree-plant-fireFree Image from public domain licenseLesotho Africa 2013 Asset Collection TripImages from December 2013 asset collection trip to Africa. Original public domain… https://www.rawpixel.com/image/3382462/free-photo-image-2013-africa-apparelFree Image from public domain license