http://www.biodiesel.org
The National Biodiesel Board (NBB) is the national trade association representing the biodiesel industry as the coordinating body for research and development in the United States.

http://www.biodieselamerica.org
Biodiesel America.org contains useful biodiesel resources, information, a community and news. 

http://www.nesea.org
The Northeast Sustainable Energy Association (NESEA) is the Northeast’s leading organization of professionals and concerned citizens working in sustainable energy and whole systems thinking.

http://www.nofamass.org
The Northeast Organic Farming Association is a community including farmers, gardeners, landscapers and consumers working to educate members and the general public about the benefits of local organic systems.

http://www.Burkeoil.com
Dennis K. Burke's premium commercial diesel fuel and full line of lubricants and related products, the first to supply Massachusetts with biodiesel.