drawing by Cynthia Gehrie
- Forest Preserve District of Cook County Volunteer Resources
- Forest Preserve District of Cook County
- Friends of the Forest Preserves
- The Habitat Project
- Audubon - Chicago Region
- Chicago Wilderness (Check especially their publications and model policies.)
- Chicago Wilderness Magazine (Here's a nice article on Somme Prairie Grove.)
- The North Branch Restoration Project
- Great Lakes Ecological Protection and Restoration (Read the '94 Somme Prairie Grove restoration article.)
- WISFLORA: Wisconsin Vascular Plant Species (A nice site to help identify plant species)
- USDA Natural Resources Conservation Service (Another good site to learn about plant species)
