Irish IT Accessibility Guidelines
The National Irish I.T. Accessibility Guidelines, which provide direction on making electronically delivered services accessible to people with disabilities

U.S. Department of Health and Human Services - Usability
The Board interprets paragraphs (a) through (k) of this section as consistent with the following priority 1 Checkpoints of the Web Content Accessibility Guidelines 1.0 (WCAG 1.0

Usability Guidelines: Web Design for Users With Disabilities
75 design guidelines to increase the usability of websites and intranets for users with disabilities Nielsen Norman Group Report Beyond ALT Text: Making the Web Easy to Use for Users With Disabilities

Watchfire - Accessibility Module: Enabling Web Accessibility
In some populations, the disabled account for upwards of 20 percent [1] , and non-compliance with international accessibility guidelines such as the World Wide Web Consortium's Web Content