Antoninus Pius, roman emperor (138 - 161). Bust. Marble. Farnese collection in the NNAM. Naples, Italy. 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Free public domain CC0 image. https://www.rawpixel.com/image/6036202/photo-image-public-domain-free-black-and-whiteFree Image from public domain licenseFlorence - Ancient and Modern Gallery (1907–1915), by Michelangelo Buonarroti. Original public domain image from… https://www.rawpixel.com/image/9407258/photo-image-art-vintage-public-domainFree Image from public domain licenseMarble portrait of the co-emperor Lucius Verus (161–169 CE), vintage Greek statue. Original public domain image from… https://www.rawpixel.com/image/12230380/photo-image-person-art-vintageFree Image from public domain licenseDiana (fragment) statue. Original public domain image from Smithsonian. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/9851284/photo-image-white-background-person-artFree Image from public domain licenseAmerica by Hiram Powers (Dallas Museum of Art), Dallas, Texas, USA. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339330/free-photo-image-statue-sculpture-greekFree Image from public domain licenseBust of Nefertete (20th century). Original public domain image from The Minneapolis Institute of Art. Digitally enhanced by… https://www.rawpixel.com/image/8627527/photo-image-art-vintage-public-domainFree Image from public domain licenseRolled maps standing against a world map on the wall. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282214/free-photo-image-texture-book-travelFree Image from public domain licenseGreek Slave sculpture (1841-1843) by Hiram Powers. Original public domain image from The Smithsonian Institution. Digitally… https://www.rawpixel.com/image/9407621/photo-image-vintage-illustration-public-domainFree Image from public domain licenseFree old college library in Dublin photo, public domain building CC0 image. https://www.rawpixel.com/image/5920301/photo-image-book-public-domain-woodFree Image from public domain licenseTwo Japanese warriors in full dress costumes by Felice Beato and Baron Raimund von Stillfried https://www.rawpixel.com/image/14263021/photo-image-face-hand-personFree Image from public domain licenseAureus de Claude (Drusus père de Claude). Avers : NERO.CLAVDIVS DRVSVS.GERMANICVS IMP. Tête de Drusus portant une couronne… https://www.rawpixel.com/image/8718024/photo-image-vintage-gold-public-domainFree Image from public domain licenseThe gothic architecture and facade of Notre Dame Cathedral in Paris, France.. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3285466/free-photo-image-castle-church-travel-landmarksFree Image from public domain licenseCloseup on Perseus with the Head of Medusa. Free public domain CC0 image. https://www.rawpixel.com/image/6034969/photo-image-public-domain-statue-freeFree Image from public domain licenseCoimbra, Portugal. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286797/free-photo-image-door-corridor-architectureFree Image from public domain licenseA skull prepared for demonstration: front view. Photograph. https://www.rawpixel.com/image/13970604/skull-prepared-for-demonstration-front-view-photographFree Image from public domain licensePair of eyes (5th century BCE), bronze, marble, frit, quartz, and obsidian sculpture. Original public domain image from The… https://www.rawpixel.com/image/12230680/photo-image-art-vintage-marbleFree Image from public domain licenseEskimo remains at ancient village site. Original public domain image from Flickr https://www.rawpixel.com/image/8799342/photo-image-flower-vintage-public-domainFree Image from public domain licenseSphinxes Serapeum at Saqqara Lou. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339322/free-photo-image-ancient-egyptian-art-egyptFree Image from public domain licenseMembers of the International Medical Congress, London, 1881. Photograph by Herbert R. Barraud, 1882. https://www.rawpixel.com/image/13970198/photo-image-background-face-personFree Image from public domain licenseForest Research Institute, Dehradun, India. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282207/free-photo-image-forest-india-corridorFree Image from public domain licenseA young sumo wrestler posing in a photographic studio, wearing a richly decorated apron, in front of a plain backdrop. https://www.rawpixel.com/image/13963204/photo-image-face-person-artFree Image from public domain licenseThe Edwin Smith papyrus, the world's oldest surviving surgical document. Written in hieratic script in ancient Egypt around… https://www.rawpixel.com/image/8717997/photo-image-paper-vintage-public-domainFree Image from public domain licensePyramid of Khafra. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305276/free-photo-image-egypt-desert-wallpaper-ancientFree Image from public domain licenseThe Great Wall of China at Mutianyu, near Beijing, in July 2006. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3339248/free-photo-image-mountain-great-wall-cc0Free Image from public domain licenseI.K. Brunel and Others Observing the "Great Eastern" Launch Attempt by Robert Howlett https://www.rawpixel.com/image/14263133/photo-image-face-steam-peopleFree Image from public domain licenseTwo women walk past the huge cavity where one of the ancient Buddhas of Bamiyan, known to locals as the "Father Buddha,"… https://www.rawpixel.com/image/8717903/photo-image-public-domain-women-personFree Image from public domain licenseQur'an of Ibrahim Sultan (830 AH/1427 CE), ancient artifact by Ibrahim Sultan. Original public domain image from The MET… https://www.rawpixel.com/image/12228804/photo-image-paper-flower-bookFree Image from public domain licenseAureus d'Auguste émis à Rome, 19 av.JC. CAESAR AVGVSTVS. Tête d'Auguste couronnée de chêne à droite. - Or 8,05 g - BNCMER I… https://www.rawpixel.com/image/8718298/photo-image-vintage-gold-public-domainFree Image from public domain licenseSkull (20th century). Original public domain image from The Smithsonian Institution. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/10103530/photo-image-face-vintage-skullFree Image from public domain licenseFree Microphones Studio Recording photo, public domain singing CC0 image. https://www.rawpixel.com/image/5926178/photo-image-public-domain-microphones-freeFree Image from public domain licenseAn Alaskan Inuit skull, showing the effects of syphilis. 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