sketch; three figures--foreground head and torso slumped, with head supported by figure at right; standing figure at left;… https://www.rawpixel.com/image/7652663/image-vintage-art-public-domainFree Image from public domain licenseDistinguished British men of science 1807-1808 assembled in the library of the Royal Institution, London. Mezzotint by W.… https://www.rawpixel.com/image/13975701/image-person-art-clothingFree Image from public domain licenseVenus probeert Adonis te weerhouden van de jacht (1753 - 1770) by Philippe Joseph Tassaert, Peter Paul Rubens, Karl Johann… https://www.rawpixel.com/image/13783268/image-paper-horse-cartoonFree Image from public domain licenseDistinguished British men of science 1807-1808 assembled in the library of the Royal Institution, London. Mezzotint by W.… https://www.rawpixel.com/image/13981199/image-person-art-clothingFree Image from public domain licenseA marble vase placed on a pedestal. Etching by G.B. Piranesi, ca. 1770. https://www.rawpixel.com/image/14015746/marble-vase-placed-pedestal-etching-gb-piranesi-ca-1770Free Image from public domain licenseJohn Bull as the patient of promotors of competing therapies; representing British parliamentary reform. Aquatint by S. de… https://www.rawpixel.com/image/13971398/image-cartoon-face-personFree Image from public domain licenseThe distinguished men of science 1807-8: a key to the identities of the sitters. Photograph of engraving by W. Walker, 1862… https://www.rawpixel.com/image/14011458/image-cartoon-face-personFree Image from public domain license