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 licenseDe kleine kunstliefhebbers (1840 - 1886) by Hippolyte Michaud https://www.rawpixel.com/image/13744781/kleine-kunstliefhebbers-1840-1886-hippolyte-michaudFree Image from public domain licensePortret van de hoogleraar klassieke talen Johan Cornelis Gerard Boot (1840 - 1886) by Dirk Jurriaan Sluyter https://www.rawpixel.com/image/13785086/image-paper-face-cowFree Image from public domain license