“On February 7, 2017, The Met made all images of public-domain works in its collection available under Creative Commons Zero (CC0). Whether you're an artist or a designer, an educator or a student, a professional or a hobbyist, you now have more than 406,000 images of artworks from The Met collection to use, share, and remix—without restriction.” Can be a good option for finding deck imagery if you want to avoid stock photos.