This guide contains everything you need to know about finding, downloading/accessing, and citing e-books. Here at DeTamble Library, we have over 500K e-books. There are millions of freely and legally available e-books on the open web, which are also discussed in this guide. Some of these books are not published or copyrighted by a traditional means (such as open access books) and others are in the 'public domain' since their copyright has expire. In the United States, copyright expires on books after 95 years.