Association for Environmental and Outdoor Education
Audublog, blog on herring conservation
Bay Area Environmental Education Resource Fair
Blue Waters Kayaking
Bolinas Lagoon Foundation
California Regional Environmental Education Community and California Regional Environmental Education Community Region 4
Environmental Education Council of Marin 
Environmental Forum of Marin
Golden Gate Audubon Society
Richardson Bay Audubon Society
Madrone Audubon Society
Marin Audubon Society
Marin County Convention & Visitors Bureau
Mill Valley Market, which donates to ACR via their Shop & Give program
Point Reyes Bird Observatory
Point Reyes Birding and Nature Festival
San Francisco Nature Education
Sequoia Audubon Society
Sonoma Chamber of Commerce/Visitor's Bureau
The Wild Santuary, the website of bio-acoustician Dr. Bernie Krause