Stock Images, Audio & Video Footage
Where to find stock video/images:
The links below lead to resources which offer open access images which are public domain, under creative commons licensing, or governmental works. Each site has its own expectations for attribution. Users should familiarize themselves with the attribution expectations of each resource—one way to do so is clicking on the “about” link on each site.
It is also worth noting that while all of the below sites offer free content, some sites may also offer paid content or links to paid content in addition the free content on the site.
The Public Domain Review
National Gallery of Art
Organization Websites may offer content listed on pages such as “Press Kit; Media Center; Press Room; etc.”
For instance: http://www.actionforhealthykids.org/media-center