Sir Robert Sibbald. Line engraving by W. H. Lizars after J. Alexander. https://www.rawpixel.com/image/14013959/sir-robert-sibbald-line-engraving-lizars-after-alexanderFree Image from public domain licenseBeautiful sun setting over mountain range. Original public domain image from Flickr https://www.rawpixel.com/image/3262166/free-photo-image-red-moon-eclipse-sunsetFree Image from public domain licenseCarlo Guattani. Line engraving by G. Marcucci after G. Cleter. https://www.rawpixel.com/image/14016464/carlo-guattani-line-engraving-marcucci-after-cleterFree Image from public domain licenseFree Christmas decoration on fireplace image, public domain holiday CC0 photo. https://www.rawpixel.com/image/5924702/photo-image-background-xmas-public-domainFree Image from public domain licenseLittle girl applying powder to her face, somewhere in Illinois by D W S Rawson https://www.rawpixel.com/image/14305054/little-girl-applying-powder-her-face-somewhere-illinois-rawsonFree Image from public domain licenseJohn Abernethy. Mezzotint by E. McInnes, 1842, after Sir T. Lawrence. https://www.rawpixel.com/image/13976992/john-abernethy-mezzotint-mcinnes-1842-after-sir-lawrenceFree Image from public domain license"Venus and Mars". Etching by C.O. Murray after L. Alma-Tadema. https://www.rawpixel.com/image/13989724/venus-and-mars-etching-co-murray-after-alma-tademaFree Image from public domain licenseClose-up of the head of a brown horse with a tousled mane standing in the snow. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3304701/free-photo-image-animal-canine-cc0Free Image from public domain licenseThe Virgin with the Christ Child; representing the golden age. Stipple engraving by R. Menageot after G.B. Salvi, il… https://www.rawpixel.com/image/14019326/image-face-christ-personFree Image from public domain licenseMan and woman dressed in similar costumes walking across beach https://www.rawpixel.com/image/14303514/man-and-woman-dressed-similar-costumes-walking-across-beachFree Image from public domain licenseDuncan Harkness Weir, D.D., Professor of Oriental Languages by Thomas Annan https://www.rawpixel.com/image/14319666/duncan-harkness-weir-dd-professor-oriental-languages-thomas-annanFree Image from public domain licensePortrait of Young Man in Military Costume, India by Bourne and Shepherd https://www.rawpixel.com/image/14319867/portrait-young-man-military-costume-india-bourne-and-shepherdFree Image from public domain licenseWoman holding dead animal head image, public domain nature CC0 photo. https://www.rawpixel.com/image/5904626/photo-image-background-public-domain-artFree Image from public domain license[Anna Turner wife of Albert Turner of Stow Creek N.J. by W E Service https://www.rawpixel.com/image/14307739/anna-turner-wife-albert-turner-stow-creek-nj-serviceFree Image from public domain licenseWilliam Salmon. Line engraving by R. White, 1700, after himself. https://www.rawpixel.com/image/14006363/william-salmon-line-engraving-white-1700-after-himselfFree Image from public domain licenseFrancis Drake. Line engraving by P. Rothwell, 1812, after N. Drake. https://www.rawpixel.com/image/13988759/francis-drake-line-engraving-rothwell-1812-after-drakeFree Image from public domain licenseFree glass ball, Christmas light bokeh image, public domain holiday CC0 photo. https://www.rawpixel.com/image/5903314/photo-image-background-xmas-public-domainFree Image from public domain licenseAmsterdam streets transformed into ice rinks (1963). Free public domain CC0 photo. https://www.rawpixel.com/image/6015906/photo-image-face-public-domain-treeFree Image from public domain licensePerson climbing rock, leisure activity image. Free public domain CC0 photo. https://www.rawpixel.com/image/6202290/photo-image-public-domain-nature-personFree Image from public domain licenseFree golden retriever dog sitting in living room image, public domain animal CC0 photo. https://www.rawpixel.com/image/5914933/photo-image-background-public-domain-houseFree Image from public domain licenseJohann Georg Zimmermann. Stipple engraving by K. Mackenzie, 1808. https://www.rawpixel.com/image/13981125/johann-georg-zimmermann-stipple-engraving-mackenzie-1808Free Image from public domain licenseUnidentified young woman seated, in 3/4 profile by L A Atwood https://www.rawpixel.com/image/14307324/unidentified-young-woman-seated-34-profile-atwoodFree Image from public domain licenseRed dinosaur, historical creature background. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3298836/free-photo-image-dinosaur-t-rex-lizardFree Image from public domain licenseGottfried Moebius. Line engraving by J. Dürr after himself. https://www.rawpixel.com/image/13958654/gottfried-moebius-line-engraving-durr-after-himselfFree Image from public domain licenseThomas, Baron Dimsdale. Stipple engraving by W. Ridley, 1802. https://www.rawpixel.com/image/14015710/thomas-baron-dimsdale-stipple-engraving-ridley-1802Free Image from public domain licensePortrait of Colonel Abbott, Inspector General of Ordnance by Felice Beato https://www.rawpixel.com/image/14324453/portrait-colonel-abbott-inspector-general-ordnance-felice-beatoFree Image from public domain licenseEvening sky, shadow palm tree. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300731/free-photo-image-palm-trees-summer-abiesFree Image from public domain licenseUnidentified man with long, bushy muttonchops, seated in a chair with tassels by Alexander Gardner https://www.rawpixel.com/image/14307838/image-face-person-artFree Image from public domain licenseChristian Friedrich Elsner. Line engraving by J. H. Lips after C. Vernet. https://www.rawpixel.com/image/14020522/christian-friedrich-elsner-line-engraving-lips-after-vernetFree Image from public domain licensePortrait of an elderly man with white hair and muttonchop whiskers https://www.rawpixel.com/image/14285963/portrait-elderly-man-with-white-hair-and-muttonchop-whiskersFree Image from public domain licenseJohann Guenther [Guinter] van Andernach. Line engraving. https://www.rawpixel.com/image/14019089/johann-guenther-guinter-van-andernach-line-engravingFree Image from public domain licenseAdrianus Junius [Adriaen de Jonghe]. Line engraving by S. Furck, 1650. https://www.rawpixel.com/image/14019694/adrianus-junius-adriaen-jonghe-line-engraving-furck-1650Free Image from public domain licenseMoritz Hoffmann. Line engraving by P. Kilian after D. Preissler, 1664. https://www.rawpixel.com/image/14012697/moritz-hoffmann-line-engraving-kilian-after-preissler-1664Free Image from public domain license