- The Envirolink Network
- Environmental Education - Sierra Club
- The Environmental Education Directory
- Environmental Learning Network
- Geneva Lake Association
- Geneva Lake Conservancy
- Geneva Lake Environmental Agency
- Horticultural Hall
- Kishwauketoe Nature Conservancy
- The Leopold Education Project
- National Audubon
- National Wildlife Federation Environmental Education
- North American Association for Environmental Education
- SEEK, (Sharing Environmental Education Knowledge)
- USEPA Environmental Education
- Wisconsin Department of Natural Resources - Education
- Water Safety Patrol
- Wisconsin Environmental Education Board
- Yerkes Observatory