Unglued Ebooks

Ungluing and Copyright

Are Unglued Ebooks in the Public Domain?
No. Books in the public domain, because their copyrights have expired, or because they were created by the US government, are already free for you to copy, remix, and share! If a book is in the public domain, it doesn't need to be unglued, it's already unglued. But lots of other books are free-licensed even though their copyrights are still in force; if you don't adhere to the license terms, you are infringing that copyright.
How can I tell if a book is in copyright or not?
Unfortunately, it can be complicated -- which is why wants to simplify things, by making unglued ebooks unambiguously legal to use in certain ways. The laws governing copyright and the public domain vary by country, so a book can be copyrighted in one place and not in another. In the United States, the Library Copyright Slider gives a quick estimate. lists a book that I know is already Creative Commons licensed or available in the public domain. How can I get the link included?
If you are logged in to, the "More..." tab for every work lists the edition we know about. There is a link for every edition that you can use to tell us about Creative Commons or public domain downloads. We require that these books be hosted at certain known, reputable repositories such as Internet Archive, Wikisources, Hathi Trust, Project Gutenberg, Github or Google Books.