Rare Children’s Books Digital Archive at the Library of Congress
To celebrate the centennial of Children's Book Week in 2019, the US Library of Congress has made available a free digital collection of 100+ out-of-print, public-domain children's books from before 1924. These historically significant works include examples of the work of American illustrators such as W.W. Denslow, Peter Newell, and Howard Pyle, as well as works by renowned English illustrators Randolph Caldecott, Walter Crane, and Kate Greenaway.
Source: https://www.loc.gov/collections/childrens-book-selections/about-this-collection/
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