- National Agricultural Library (NAL) www.nal.usda.gov
- Sustainable Agriculture Research and Education (SARE)
www.sare.org/resources - Center for Agricultural Resilience (CFAR) www.thecfar.org/
- National Center for Agricultural Literacy (NCAL) www.agliteracy.org/resources
- The Organic Centerwww.organic-center.org
