Open Culture:

The Library has done its digital users a service in this regard as well, with its “Free to Use and Reuse Sets,” a sizable collection of images that the Library “believes… is either in the public domain, has no known copyright, or has been cleared by the copyright owner for public use.”

Need photographs of Abraham Lincoln—and scans of his speeches, letters, and “dueling instructions”—for that book you’re writing? You’re covered with this gallery. Need a collection of classic children’s books for your website (or your reading pleasure)? Here you go.

What an incredible collection to peruse and use.