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 licenseBoats off the Coast, Storm Approaching by John Sell Cotman https://www.rawpixel.com/image/9613662/boats-off-the-coast-storm-approaching-john-sell-cotmanFree Image from public domain licenseNicolas Philibert Adelon. Lithograph by N. E. Maurin, c. 1842. https://www.rawpixel.com/image/14013043/nicolas-philibert-adelon-lithograph-maurin-1842Free Image from public domain license