Something to celebrate this spring: the 50th anniversary of this Caldecott Honor Book and the 100th anniversary of its creator, Leo Lionni. Long unavailable in hardcover from its original publisher, Inch by Inch tells the tale of a tiny green inchworm who can measure anything, from a robin’s tail to a toucan’s beak. But when a nightingale demands that the inchworm measure its song, the clever worm calls on its skill to creatively save his life. Knopf is proud to add this classic to the many beloved picture books by Leo Lionni.“A handsome and appropriate book to give pleasure to little children and their elders.”—The Horn Book Fanfare