Asian Water Dragon (2018) by Skip Brown. Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060402/free-photo-image-dragon-lizard-greenFree Image from public domain licenseThe landmark Eiffel Tower in Paris, France with a gray background. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285417/free-photo-image-travel-landmarks-arch-archedFree Image from public domain licensePedanios Dioscorides. Stipple engraving by A. Tardieu after Visconti. https://www.rawpixel.com/image/13997963/pedanios-dioscorides-stipple-engraving-tardieu-after-viscontiFree Image from public domain licenseUnidentified little boy, printed in vignette-style by Sutter https://www.rawpixel.com/image/14310275/unidentified-little-boy-printed-vignette-style-sutterFree Image from public domain licenseBenjamin Franklin. Mezzotint by C. Turner after M. Chamberlin, 1762. https://www.rawpixel.com/image/13972419/benjamin-franklin-mezzotint-turner-after-chamberlin-1762Free Image from public domain licenseThomas Haselden. Mezzotint by J. Faber, junior, 1740, after T. Frye, 1735. https://www.rawpixel.com/image/14014380/thomas-haselden-mezzotint-faber-junior-1740-after-frye-1735Free Image from public domain licensePortrait of a Woman with Her Four Children by Bertha Wehnert Beckmann https://www.rawpixel.com/image/14274084/portrait-woman-with-her-four-children-bertha-wehnert-beckmannFree Image from public domain licenseFree closeup of a big broccoli on white background image, public domain CC0 photo. https://www.rawpixel.com/image/5914498/image-public-domain-plant-greenFree Image from public domain license"Weeping" from le Brun, Heads. Representing the various passions of the soul..., circa 1760 https://www.rawpixel.com/image/13999452/image-paper-cartoon-faceFree Image from public domain licenseFree ham & cheese on bread breakfast image, public domain food CC0 photo. https://www.rawpixel.com/image/5920897/photo-image-background-public-domain-woodFree Image from public domain licenseSaint Andrew. Engraving by D. Cunego, 1775, after G. Cagnacci. https://www.rawpixel.com/image/14007571/saint-andrew-engraving-cunego-1775-after-cagnacciFree Image from public domain licenseEgide de Bertrand Pibrac. Line engraving by J. Marchand, 1770, after Lemonnier. https://www.rawpixel.com/image/13999278/egide-bertrand-pibrac-line-engraving-marchand-1770-after-lemonnierFree Image from public domain licenseJohann Andreas Fischer. Line engraving attributed to Caspar (Jasper) Specht. https://www.rawpixel.com/image/14017997/johann-andreas-fischer-line-engraving-attributed-caspar-jasper-spechtFree Image from public domain licenseSamuel Frederick Gray. Lithograph by T. Fairland after M. Gauci. https://www.rawpixel.com/image/14015562/samuel-frederick-gray-lithograph-fairland-after-gauciFree Image from public domain licenseBeautiful waterfall view, nature background. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3302571/free-photo-image-australia-animal-cairnsFree Image from public domain licenseCaspar van Baerle [Barlæus]. Line engraving by P. Sluyter. https://www.rawpixel.com/image/13983507/caspar-van-baerle-barlaeus-line-engraving-sluyterFree Image from public domain licenseNew Jersey Army National Guard Soldiers from the 250th and 350th Finance Detachments fire the M-16 Rifle during training on… https://www.rawpixel.com/image/3581550/free-photo-image-apparel-armored-armyFree Image from public domain licenseJean Sylvain Bailly. Line engraving by F. Pigeot after J. B. Mauzaisse. https://www.rawpixel.com/image/13979044/jean-sylvain-bailly-line-engraving-pigeot-after-mauzaisseFree Image from public domain licenseUnidentified young man, printed in vignette-style by Mayes and Bell https://www.rawpixel.com/image/14307320/unidentified-young-man-printed-vignette-style-mayes-and-bellFree Image from public domain licenseA series of original portraits and caricature etchings, with biographical sketches and illustrative anecdotes / [John Kay]. https://www.rawpixel.com/image/13982376/image-cartoon-face-personFree Image from public domain license"Le Sueur", Statue by Aristide Husson, Decoration of the Louvre, Paris by Édouard Baldus https://www.rawpixel.com/image/14324481/image-face-person-artFree Image from public domain licensePresident Barack Obama takes aim with a photographer's camera backstage prior to remarks about providing mortgage payment… https://www.rawpixel.com/image/4051007/image-public-domain-person-cameraFree Image from public domain licenseBeach seats in the north sea of Germany. Free public domain CC0 photo. https://www.rawpixel.com/image/6041406/photo-image-background-public-domain-oceanFree Image from public domain licenseNathan Drake. Stipple engraving by W. Ridley, 1805, after H. Thomson. https://www.rawpixel.com/image/14002968/nathan-drake-stipple-engraving-ridley-1805-after-thomsonFree Image from public domain licenseSir William Anderson . Oil painting by a follower of John Lucas. https://www.rawpixel.com/image/13954806/sir-william-anderson-oil-painting-follower-john-lucasFree Image from public domain licensePaolo Bongiovanni. Lithograph by P. Bertotti after G. Cornienti, 1832. https://www.rawpixel.com/image/13978354/paolo-bongiovanni-lithograph-bertotti-after-cornienti-1832Free Image from public domain licenseJohn Locke. Line engraving by G. Vertue, 1713, after Sir G. Kneller, 1697. https://www.rawpixel.com/image/13992511/john-locke-line-engraving-vertue-1713-after-sir-kneller-1697Free Image from public domain licenseCharles de l'Ecluse [Clusius]. Stipple engraving by A. Tardieu after himself after M. Rota. https://www.rawpixel.com/image/14011643/image-face-person-artFree Image from public domain licenseKing Vulture (2006). Original from Smithsonian's National Zoo. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/3060886/free-photo-image-bird-forest-animalFree Image from public domain licenseUnidentified man with moustache wearing a white hat by J Williams and Company https://www.rawpixel.com/image/14306636/unidentified-man-with-moustache-wearing-white-hat-williams-and-companyFree Image from public domain license