Artstor offers many Creative Commons (CC0) files in the Digital Library. Creative Commons is the “no copyright reserved” option in the Creative Commons Toolkit. These images are available for use, as long as you cite them using the appropriate style guide for your discipline.

To search for Creative Commons content, use the keyword search box and enter “creative commons zero”.

 

 

Or, use the Advanced Search box and use the same keywords, along with further selections, to narrow your results.

This search will return a selection of Creative Commons Zero (CC0) images to select from for your research.

Additionally, the metadata associated with each image (found in the right-hand sidebar) will contain a link to the contributor page, where you can download the high-resolution fie or save it to your collections.

Source