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 licensePrincess Varvara Nikolaevna Gagarina (1762–1802) by Jean-Baptiste Greuze https://www.rawpixel.com/image/9613418/princess-varvara-nikolaevna-gagarina-1762-1802-jean-baptiste-greuzeFree Image from public domain licenseWaitress Okita of the Naniwaya Teahouse. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7638707/image-art-vintage-public-domainFree Image from public domain licenseRegatta on the Grand Canal, near the Rialto Bridge, Venice (1780 - 1793) by Francesco Guardi https://www.rawpixel.com/image/13743150/image-art-sky-public-domainFree Image from public domain licenseBuildings and alumni of Charterhouse, London and Surrey. Colour lithograph by Beynon & Company after [H. Hale]. https://www.rawpixel.com/image/13978677/image-cartoon-face-personFree Image from public domain license