Links for Copyright-Friendly Images

Pics4Learning is a safe, free image library for education. Teachers and students can use the copyright-friendly photos and images for classrooms, multimedia projects, web sites, videos, portfolios, or any other project in an educational setting.
Link to Pics4Learning

Creative Commons
Creative Commons is a nonprofit organization that enables the sharing and use of creativity and knowledge through free legal tools. Search Creative Commons using various sites to find images, websites, music or media.
Link to SearchCreativeCommons

Flikr-Creative Commons
Many Flickr users have chosen to offer their work under a Creative Commons License. You may browse or search for photos under the different types of licenses. When you are search make sure you choose.
Link to Flikr-Creative Commons