This is perhaps my new favourite site to pass time when the computer is busy (at work, home, anywhere). This site has scanned in books from the British Library, University of California, and the University of Toronto. Right now they're all copyright-free, but soon there will be others by permission of author.
Just did a quick search on Edgar Allen Poe and was able to find his short stories and poems. Also did a search for my city and was able to find hilarious accounts of "wild-west" stories about westerners and natives.
The site is cool in that you can flip through page by page and read them like a real book. The only useful feature I can't seem to find is how to flip to a specific page, but I'm sure that will be added in due time.
Have fun!
EDIT:
Link