Free / Creative Commons / Stock Art / or Just Attribution Websites
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Stock Art
- Artvee
- Biodiversity Heritage Library
- Digital Comics Museum
- Europeana
- Heritage Library
- Manuscript Miniatures
- NASA
- Old Book Illustrations
- Openverse
- Pixabay
- Public Domain Image Archive
Museums
- Aichi Prefectural Museum of Art
- Art Institute of Chicago
- Barnes Foundation
- Berlinische Galerie
- Cleveland Museum of Art
- Collections | Europeana
- Dallas Museum of Art
- Detroit Institute of Arts
- Finnish National Gallery
- Gallery of Art
- Getty Open Content
- Groeninge Museum
- Library of Congress
- Los Angeles County Museum of Art
- MET Museum National
- Metropolitan Museum of Art
- Museo
- National Human Genome Research Institute
- National Oceanic and Atmospheric Administration
- New York Public Library
- Paris Musées
- Rijk Museum
- The Public Domain Review
- Smithsonian Open Access
- Walters Art Museum
- World Factbook By The CIA - the Factbook is no longer being updated but the back catalog is still available
- Yale University
Photography
- Flickr Creative Commons
- Kaboom Pics
- Libreshot
- Negative Space
- Pexels
- Picnoi
- Unsplash
- WIkimedia Commons