Graphic Sources

Web Graphics
Great resource of over 40,000 free graphics with 150GB of images, clip art, fonts, and photographs also available for a reasonable membership fee.
http://www.arttoday.com

Getty Images
Numerous photographic images available for purchase by a searchable index.
http://www.gettyimages.com

PictureQuest
Contains collections from about 40 leading stock agencies containing about 400,000 images. Images are licensed for a specific use. License fee depends upon usage.
http://www.picturequest.com

321 Clip Art
Hundreds and hundreds of free clip art images available including alphabets, side bars, buttons, web elements and much more!
http://www.321clipart.com