U.S. Equal Employment Opportunity Commission
http://www.eeoc.gov/

U.S. Access Board - A Federal Agency Committed to Accessible Design for People with Disabilities
http://www.access-board.gov/

US Department of Justice ADA Home Page
http://www.usdoj.gov/crt/ada/adahom1.htm

Access by Design
http://www.access-by-design.com/

Assistive Technology-Disabilities
http://www.assistivetechnologies.com/

ADA Architecture Guidelines
http://www.access-board.gov/adaag/html/adaag.htm

ICC/ANSI A117.1 Accessible and Usable Buildings and Facilities
http://www.intlcode.org/a117/