Creative Commons search page provides an easy way to search across various sites for Creative Commons-licensed images, video and audio. It’s a great way to start your search for openly licensed digital media.
Art Images for College Teaching - Art and architecture images photographed by Allan Kohl.
Educational Technology Clearinghouse - Over 45,000 pieces of free clipart.
Flickr - Creative Commons - Browse or search through content under each type of license.
Google Images - You still can find free images on Google without infringing copyrights. Just you have to do this with caution. You go to ‘Google Images’ and make your search, in the section ‘Tools’ you click on ‘Usage Rights’ and from there you can select Creative Commons licensed images.
Library of Congress: Picture Collection - This online collection provides access to about 7,000 different views and portraits made during the American Civil War (1861-1865) and its immediate aftermath
PublicDomainPictures.net - A repository for free public domain images.
Yahoo Images - Using Yahoo's image search tool, you can select filters to refine results to show only images that are licensed under Creative Commons.
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