Book Monkey Curious George : Season 5 Episode 8

George is off to one of his favorite places in the city, the library. But when Mrs. Dewey the librarian has to run off, she leaves him in charge of the library to stack and sort books. When George has trouble finding a certain book, he decides to rearrange them, first by color, then by size. But then Steve tells him that the proper way to arrange books is by subject.