How do I create accessible spreadsheets?
The UK Association of Accessible Formats (UKAAAF) develop and promote standards and best-practice for the production and provision of accessible formats. They produce a number of guides, including how to produce clear print or large print documents. It will be particularly useful for people aiming to create accessible printed materials, either for the general public (clear print) or specifically for people with low vision (large print).
Visit the UKAFF website.