Save the Prairie Society
- Sponsors tours and activities as an educational service, land acquisition, volunteer land management to protect prairie.
- http://savetheprairiesociety.org/

Grand Prairie Friends of Illinois
- Nonprofit organization composed of people from many walks of life who share a commitment to preserving and restoring tallgrass prairie in East-Central Illinois. Includes resources and information on reconstruction projects.
- http://www.prairienet.org/gpf/

Prairies of Illinois
- Find out the why Illinois is known as the Prairie State. Includes details on history, ecology, and photo galleries of select prairies, and bibliography.
- http://dnr.state.il.us/conservation/naturalheritage/florafauna/document.htm

Prairies in the Prairie State
- Includes an introduction to the state's plant ecosystem, physical environment, plants and animals, human interactions, historical and scientific records, along with activities and resources. Presented by: the Openlands Project and the Illinois State Museu
- http://www.museum.state.il.us/exhibits/midewin/