The White House
http://www.whitehouse.gov

U.S. Energy Information Administration
http://www.eia.doe.gov

Enviromental Potection Agency
http://www.epa.gov/omswww

CARB California Air Resources Board
http://www.arb.ca.gov/homepage.htm

CARB off Road Certification Database
http://www.arb.ca.gov/msprog/offroad/cert/cert_search.php

UL Certification database
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm

National Fire Protection Agency
http://www.nfpa.org

Railroad Commission of Texas
http://www.rrc.state.tx.us

Natural Gas Vehicle Coalition, Arlington, VA. 
http://www.ngvc.org.

West Start-Cal Start
http://www.calstart.org

Clean Cities
http://www.cleancities.com

National Association of Fleet Administrators
http://www.nafa.org. 

Propane Education and Research Council
http://www.propanecouncil.org

Fleets and Fuels Newsletter
http://www.augustpacific.com

Natural Gas Fuels Magazine
http://www.rppublishing.com

Honda Clean Air Hotline
http://www.civicgx.com