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ICDL (International Children's Digital Library)

The mission of the International Children's Digital Library Foundation (ICDL Foundation) is to support the world's children in becoming effective members of the global community - who exhibit tolerance and respect for diverse cultures, languages and ideas -- by making the best in children's literature available online free of charge.

Here you can find some public domain books (all over the world) for children.
Check the website: http://en.childrenslibrary.org/index.shtml

Thanks!

But one has to take a close look at each book and its author's life dates, some books are copyrighted.