Here is some material that Jim Thatcher presented at the
CSUN 2004 Technology and Persons with Disability Conference.

How Not to Do Web Accessibility

Paper - http://www.csun.edu/cod/conf/2004/proceedings/80.htm
Slides - http://jimthatcher.com/whatnot2004
Webpage - http://jimthatcher.com/whatnot.htm
Web Accessibility Tutorial - http://jimthatcher.com/webcourse1.htm