Wikimedia Commons has media related to Public domain books.

This category is for books that are in the public domain worldwide.

Please only add categories for books published before the 19th century and articles directly related to the subject of public domain books to this category. Because the copyright status of books published since the 19th century varies by country, articles about books published since the 19th century should not be added to this category, unless the article has a reference stating that the book is in the public domain worldwide.