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This page provides links to some of the better copyright-free and public domain resources. The advice on this page is not a legal opinion. The ideas are intended for educators and librarians who wish to locate quality, copyright-friendly materials for educational, noncommercial, and nonprofit projects. NOTE: Not all of these resources are copyright free, but most allow student to use and cite the projects in their assignments.
Thousands of photos taken by U.S. Government employees as part of their official duty are free of copyright and free to use . Based on my extensive review of government photo libraries, the best collections below.