The 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 licensestanding nude male with thick curly hair; hands not delineated; verso: sketch of arms, torso and head and sketchy figure… https://www.rawpixel.com/image/7656335/image-vintage-art-handsFree Image from public domain licenseBritish inventors, politicians and military men, gathered in a room at Buckingham Palace. Engraving by C.G. Lewis, 1863… https://www.rawpixel.com/image/13986687/image-cat-person-artFree Image from public domain licenseBritish inventors, politicians and military men: a key to the identities of the sitters. Engraving by C.G. Lewis, 1863… https://www.rawpixel.com/image/13997233/image-dog-paper-cartoonFree Image from public domain license