LIGHTING INDUSTRY LINKS:

IESNA (Illumination Engineering Society of North America)
Lightforum.com
Lightfair.com
The Lighting Research Center
National Lighting Bureau
Natl. Council on Qualif. For Ltg. Professions (NCQLP)
International Association of Lighting Designers (IALD)
Architectural Lighting Magazine
Lighting.com
International Dark Sky Association

Suggestions for links are always welcome.