http://www.aace.org/
AACE - Association for the Advancement of Computing in Education

http://www.aect.org/
AECT - Association of Educational Computing and Technology

http://www.paect.org/
AECT - Pennsylvania Chapter

http://www.astd.org
ASTD - American Society for Training and Development

http://www.astdphl.org
ASTD - Philadelphia/Delaware Valley Chapter

http://www.ispi/org
ISPI - International Society for Performance Improvement

http://www.gvispi.org
ISPI - Great Valley Chapter

http://www.shrm.org/
SHRM - Society for Human Resource Managers

http://www.usdla.org/Pages/define.html
USDLA - United States Distance Learning Association