Web Accessibility in Mind (WebAIM)
(www.webaim.org/)
"Expanding the Web's Potential for People with Disabilities" - Our goal is to improve accessibility to online learning opportunities for all people; in particular to improve accessibility for individuals with disabilities who currently may have a difficult time getting access to postsecondary online learning opportunities.
Added: 10/30/2002

Bobby - Accessibility Tests
(bobby.watchfire.com/)
Bobby is a comprehensive web accessibility software tool designed to help expose and repair barriers to accessibility and encourage compliance with existing accessibility guidelines.
Added: 10/30/2002

Dive into Accessibility
(diveintoaccessibility.org/)
"30 days to a more accessible web site". This site provides thorough illustrations of accessibility issues through well documented examples.
Added: 8/5/2002

Do-It-Yourself Accessibility
(www.webmasterbase.com/article/744)
Article by Nicky Danino on SitePoint describing quick guidelines on Accessibilty for websites.
Added: 5/23/2002

Joe Clark
(www.joeclark.org/)
Blog of "Building Accessible Websites" author and self described "Toronto writer–accessibility obsessif–curmudgeon." Great site for general accessibility resources.
Added: 5/8/2002