AHEAD, the Association on Higher Education and Disability, has an excellent position statement on fair use and accessible texts for students with disabilities. I will quote from it extensively in the next few days. For now, here is the significant historical precedent for this expansion of the fair use doctrine:
…the legislative history of the 1976 Copyright Act includes a statement that making copies of a protected work in a form for use by blind persons is a fair use.
4 See Senator Chafee’s introduction to the amendment in the Congressional Record. Retrieved December 6, 2006, from http://www.nfbcal.org/nfb-rd/1102.html