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 licenseAntidorcas marsupialis (Springbok) (1774 - 1786) by Robert Jacob Gordon https://www.rawpixel.com/image/13738771/antidorcas-marsupialis-springbok-1774-1786-robert-jacob-gordonFree Image from public domain licenseA montage of portraits of nine Scots physicians, with their signatures underneath. Photoprint. https://www.rawpixel.com/image/13975792/image-face-people-artFree Image from public domain license