Project Gutenberg offers free books in many formats. Do a search using the word “children” and there’s a list of categories with many different types of children’s books. The link for this search is

Google also offers free ebooks in many formats. Go to Google Books Type in a term, title, or author. One example of a phrase I tried is “children’s stories”. You can search for the type of books you’re interested in using subject terms. Click on the Search button. After you get results, click on Free Google ebooks, which is on the left side of the web page. Your results are for children’s books that are free and can be downloaded from Google.

For U.S. books, please note that many free books are older books which are no longer subject to U.S. copyright law.

 Mrs. P and her free interactive magic library at Mrs. P is played by TV Star Kathy Kinney who played Mimi on The Drew Carey Show.

From this site is not possible to download, but it’s got nice simple search for kids and you can read online: