The Nature Conservancy Audubon Openlands U. S. National Park Service Chicago Wilderness Magazine Pickett's Mill State Historical Site Midewin National Tallgrass Prairie LaPorte Soil & Water Center for Neighborhood Technology

The Land Conservancy Conserve Lake County Environment for the Americas New Jersey Park Service Chicago Portage National Historic Site Kane Co. Forest Preserve District McHenry Co. Conservation District Illinois Paddling Council Des Plaines River Marathon

Northeastern Illinois Planning Commission Illinois Dept. of Transportation Bluestone+Associates Reed-Turner Woodland Fernwood Botanic Gardens Forest Preserve of Lake County The Land Conservancy of McHenry County DuPage County Forest Preserves Vulcan Enterprises

Tip o' the iceberg list.