Electric League of the Pacific Northwest
SpecSource
Illuminating Engineering Society of North America
Lighting Research Center
Lighting Design Lab
Inter.Light
The Lighting Center
Lighting.com

www.electricleague.net
www.specsource.com
www.iesna.org
www.irc.rpi.edu
www.lightingdesignlab.com
www.lightsearch.com
www.lightingresource.com
www.lighting.com