Saint Francis of Assisi by Antoniazzo Romano (Antonio di Benedetto Aquilio) https://www.rawpixel.com/image/9186050/image-assisi-piero-della-francesca-saint-francisFree Image from public domain licenseBust-length portrait of an unknown woman. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7654104/image-vintage-art-public-domainFree Image from public domain licenseThe Nativity (1480s) by Antoniazzo Romano. Original from The MET Museum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/1232883/the-nativity-antoniazzo-romanoFree Image from public domain license