A little-known nifty thing about Google Books is that books already digitized via GB, whether in copyright or not, can be made available to students with visual disabilities. More inside scoop on the MBooks project at the BLT blog and at the MBooks accessibility page.
We now have a system in place for students with visual impairments to use MBooks [i.e. the digitized collection] in much the same way. Once a student registers with OSSD, any time she checks out a book already digitized by Google, she will automatically receive an email with a URL. Once the student selects the link, she is asked to login. The system checks whether the student is registered with OSSD as part of this program, and whether she has checked out this particular book. If the student passes both of those tests, she will get access to the entire full-text of the book, whether it is in copyright or not, in an interface that is optimized for use with screen readers. Currently, this system is available to UM students with visual impairments. We are investigating the possibility of including students with learning disabilities as well.