- Citizens for Conservation - Prairie restoration, preservation and conservation education in the Barrington area of NE Illinois
- McHenry County Defenders - education, recycling, wildlife preservation, ecological restoration and protection of McHenry County, Illinois
- Committee for the National Institute for the Environment (CNIE) is a national, non-profit organization working to improve the scientific basis for making decisions on environmental issues, through creation of a new, non-regulatory environmental science and education agency
- Grand Prairie Friends (GPF) is an organization of volunteers from all walks of life who share a commitment to preserving and restoring tallgrass prairie in east-central Illinois.