You can return books and other checked out materials to whichever library branch is most convenient for you. Some materials you need to return at the desk instead of in a book drop but you can still return it to any branch.
How do I return the eBooks / eAudiobooks?
The eBooks / eAudiobooks will be returned automatically after 21 days. If you have finished reading to your eBook or listening to your eAudiobook, you can let someone else enjoy it by returning it early. Go to “Account”, “eBook Loans”, and select the title you wish to return early. You will see the option to “Return early” under the title’s cover image.