There are millions of examples.
I don't think there is such a thing as a copyright date for the entire series; rather, each individual book is copyrighted. The first book was published in the UK on 26 June 1997. I guess that (1997) would be the copyright year, for the first book.
"Ella Enchanted" by Gail Carson Levine was published in 1997, so the copyright date would be 1997.
Each book has its own copyright information.
Copyright fees in the US range from $30 USD to $220 USD.
Once you have written a book, it is copyright to you. All writers copyright their own books.
The current editions are not available for free. The book is under copyright. Much older editions and out of date editions can be found.
Copyright exists as soon as the book is finished and it is not necessary to formally register with the US copyright office before publication.
1967- copyright renewed 1995
You cannot copyright a book with a future date. Copyright applies automatically as soon as the work is set in "permanent form," which usually means when it is written in draft. Copyright continues until 75 years after the death of the author. No actions are needed to obtain this property right. However, in the US, protecting your copyright in a book can be easier if the copyright statement appears in the front of the book.
Copyright Act, 1957, and Copyright Rules, 1958, as amended.
For the rightsholder, copyright allows an income to be derived from the book and its content. For a user, copyright law allows certain unlicensed uses such as in education or criticism.
If you are a citizen of or living in Nigeria at the time the book was fixed in a tangible medium, it is automatically protected by copyright.