Russ - *now* you are into performance rights in addition to copyright! (re: reading a book aloud. I believe technically to be legal it needs to be in private, which also has a strict legal definition. If you were to read itin public - then technically you should be paying performance copyright fees. (even if you didn't charge for it))I think you will find libraries are very particular about having permissions regarding materials they post on the web - or making sure they are public domain.
For example - the Lester Levy sheet music site - if you see an image of the sheet music they have cleared it as being out of copyright. the *images* however are under copyright and may not be downloaded and used as the image without permission.