Fellow travelers in offbeat paths may be interested in the Cambridge Library Collection, which features books scanned from, yes, the Cambridge University Library. It started publishing in 2009, but doesn't appear to have received the same attention as the British Library's initiative. (Again, I have to ask the British Library: what happened to the Kindle platform? Amazon claims such books don't exist.) In any event, there are all sorts of interesting things in there, ranging from a complete Lives of the Queens of England... to Charlotte Montefiore's A Few Words to the Jews.