Audubon Society http://www.audubon.org/
Barrington Countryside Park District http://www.bc-pd.org
Barrington Area Conservation Trust(BAC Trust)http://www.bactrust.org/index.html
Citizens for Conservation http://citizensforconservation.org/
Forest Preserve District of Cook County http://www.fpdcc.com/
Fox River Valley Pony Club http://sports.groups.yahoo.com/group/frvpc
Friends of the Forest Preserves http://fotfp.org/
Sierra Club - NW Cook County Group http://illinois.sierraclub.org/NWCook/
Spring Creek Restoration Project http://springcreekstewards.org/
Village of Barrington Hills http://www.barringtonhills-il.gov/