What's the difference between the Newbery and Caldecott medals?
The Newbery Medal and Caldecott Medal are both awarded by the Association for Library Service to Children, a division of the American Library Association. The Newbery Medal, named after English bookseller John Newbery (1713-67), is awarded each year "to the most distinguished contribution to American literature for children published in English in the United States during the preceding year." The Caldecott Medal, named after English illustrator Randolph Caldecott (1846-86), is awarded each year "to the artist of the most distinguished American picture book for children published in English in the United States during the preceding year."
—The Fact Monster