Useful Links: 

The LED Show - Las Vegas

http://www.theledshow.com
 

American Institute of Architects Las Vegas

http://www.aialasvegas.org
 
American Society of Landscape Architects Las Vegas

http://www.asla.org
 
IES North America: 
The Illuminating Engineering Society of North America

http://www.iesna.org

IES Las Vegas

http://www.ieslasvegas.com

 
Other Resources: 
U.S. Department of Energy
http://www.doe.gov/index.html
 
Day Lighting Collaborative
http://www.betterbricks.com/default.aspx?pid=daylighting

Association of Energy Engineers
  http://www.aeecenter.org
 
American Institute Of Architects
  http://www.aia.org
 
American Society of Heating, Refrigerating &

Air-Conditioning Engineers
  http://www.ashrae.org/
 
American Society of Civil Engineers
  http://www.asce.org/
 
Energy Star
  http://www.energystar.gov/
 
Institute of Electrical and Electronics Engineers, Inc.
  http://www.ieee.org/
 
International Dark-Sky Association
  http://www.darksky.org/
 
Institute of Transportation Engineers
  http://www.ite.org/
 
International Association of Lighting Designers
  http://www.iald.org/
 
LightFair International
  http://www.lightfair.com
 
Lighting Research Center, Rensselaer Polytechnic Institute
  http://www.lrc.rpi.edu/
 
National Electrical Manufacturers Association
  http://www.nema.org/
 
National Council on Qualifications for the Lighting Professions
  http://www.ncqlp.org/
 
New Buildings Institute
http://www.newbuildings.org/lighting.htm