- Appalachian Mountain Club-Berkshire Chapter
- Appalachian Trail Conservancy
- Berkshire Natural Resources Council
- Berkshire South Regional Community Center
- Community Health Program
- Friends Of The W.E.B. Du Bois Homesite
- Greenagers
- Housatonic Valley Association
- Upper Housatonic Valley African American Heritage Trail
- Upper Housatonic Valley National Heritage Area
- Massachusetts Audubon
- Massachusetts Department of Conservation and Recreation
- National Park Service
- The Nature Conservancy Berkshire
- Sheffield Land Trust
- Town of Great Barrington
- The Trustees of Reservations
GBLC Projects:
- Great Barrington Trails and Greenways
- Great Barrington Housatonic River Walk
- Lake Mansfield Alliance
Other Links:
- Berkshire Regional Planning Commission
- Massachusetts Department of Fish and Game
- Massachusetts Environmental Trust
- Massachusetts Executive Office of Energy and Environmental Affairs
- Massachusetts Natural Heritage and Endangered Species Program
- Peter S. Jensen & Associates, LLC