Sketchbook of Drawings and Watercolors by Hugo William Nahl, Charles Christian Nahl, Virgil Nahl, John Wilhelm Nahl, John… https://www.rawpixel.com/image/11931624/image-art-watercolor-vintageFree Image from public domain licenseThe 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 licenseMembers of the provisional government of the Second Republic of France, 1848. Lithograph. https://www.rawpixel.com/image/13984064/image-face-person-artFree Image from public domain license