Effectiveness, Accessibility & Usability

Lipman Hearne's Web Site Effectiveness Study (2002)
Guidelines for Accessible and Usable Web Sites: Observing Users Who Work With Screen Readers "Guideline 10. Include a "skip" link at the top of every Web page. Name it "Skip to main content." JAWS reads that correctly as the noun "content" with the accent on the first syllable. That wording was much more meaningful to participants than "skip navigation.""
Texas Administrative Code 206 - state accessibility guidelines
TAMU rule on Web Accessibility and Usability - see also the Standard Administrative Procedure
Building Accessible Websites - Book in Evans, serialized online. Very, VERY comprehensive, and a little wacky.
Dive Into Accessibility - Excellent how-to that starts by describing five disabled characters. The rest relates each rule to the person(s) it helps.
Happy Cog - Understanding Section 508 - Short, to the point, pulls no punches.
Alertbox - Bookmark this one. Use it all the time!
Accessible Data Tables - Pretty definitive.
Developing a Web Accessibility Business Case for Your Organization
Implementation Plan for Web Accessibility
"Skip Navigation" Links