Virtual Tour of Illinois Caverns
The natural beauty that characterizes Illinois is more than skin deep; some of the state's most significant and scenic wonders lie far beneath the surface in Illinois caves. Learn all about the caverns at this site.
Source: Office of Land Management

Photo Gallery for the State of Illinois
See beautiful pictures of Illinois at this site. Their photos are in full vibrant color and large enough to be a great companion in your state report.
Source: TrekEarth

Illinois Digital Archives
This is a wonderful collection of images that will give you a glimpse into the history of Illinois.
Source: Illinois Digital Archives

Learn more with the help of Google.