Sixteen French doctors with attributes of their specialties. Colour lithograph by A. Barrère, ca. 1906. https://www.rawpixel.com/image/13960983/image-cartoon-person-artFree Image from public domain licensePhoto Collage: Man Reclining with Violin by Juan Pedro Chabalgoity https://www.rawpixel.com/image/9185749/image-portrait-photographs-card-stock-man-standingFree Image from public domain licenseBritish Association for the Advancement of Science: speakers at its meeting in Cambridge in 1904. Coloured drawing by A.S.… https://www.rawpixel.com/image/13961764/image-cartoon-face-personFree Image from public domain licenseThe Anti-Slavery Society Convention, 1840, by Benjamin Robert Haydon (died 1846), given to the National Portrait Gallery… https://www.rawpixel.com/image/7666291/image-art-vintage-public-domainFree Image from public domain licenseGold-inlaid Colt Model 1849 Pocket Revolver (serial no. 63306) https://www.rawpixel.com/image/12491030/gold-inlaid-colt-model-1849-pocket-revolver-serial-no-63306Free Image from public domain licenseFigures and vignettes: men are on riding on horse back, a jockey sits on the ground waving his hands and a large couple walk… https://www.rawpixel.com/image/14008902/image-dog-horse-cartoonFree Image from public domain licensePortret van een man in Nederlands-Indië met een hoge hoed, en profil (1848 - 1854) by Christian Heinrich Gottlieb Steuerwald https://www.rawpixel.com/image/13793060/image-paper-cartoon-faceFree Image from public domain licenseVliegende vis (c. 1848 - c. 1854) by Christian Heinrich Gottlieb Steuerwald https://www.rawpixel.com/image/13794653/vliegende-vis-c-1848-1854-christian-heinrich-gottlieb-steuerwaldFree Image from public domain licensePortret van een kapitein (c. 1848 - c. 1854) by Christian Heinrich Gottlieb Steuerwald https://www.rawpixel.com/image/13794648/image-paper-face-frameFree Image from public domain license