This is a collection of accessability essays and presentations.
Accessibility is Little More Than Web Best Practices (124kb PDF) presentation given to the Adaptive Path User Experience Week 2004 DC on August 18th. This is similar to the STC presentation, but with the addition of a slide mentioning what is needed for accessibility that is not part of Web Best Practices (also added was the addition of "proper semantic markup" to the first bullet on what are web best practices).