freedigitalphotos.net
2,000 free images for websites, PowerPoint, newsletters, forums, blogs, schools and homework.
nwyh stock images
Royalty free business stock.
National Park Service
This site provides links to public domain digital images of national parks, monuments, historic sites and related areas. All images posted on this site are free, and may be used without a copyright release from the National Park Service.
photocase
Before using a Photocase File, you must contact the user who originally uploaded the file and clear any and all copyright issues, in the image in question.
Photoshop Tutorials Blog
List of free stock photos sites.