The Library of Congress has a collection of books that would make any bookworm turn green with envy. One of their most fascinating collections is their rare children's book library. Visitors can read the books in their entirety from the Library of Congress's online catalog. Here are 11 of our favorites. 1. A Apple Pie by Kate Greenaway (1900) This book by Kate Greenaway was designed to acquaint children with the alphabet. With simple sentences and elaborate drawings, A Apple Pie is kind of like an old-timey Sesame Street special. The book seems pretty promising as it starts with "A apple pie, B bit it, C cut it," until it gets to the last page, where the last six letters are stuffed onto a single page. Spoiler alert: UVWXYZ "all had a large slice and went off to bed."