Hickory Dickory Dock is a popular English nursery rhyme. Hickory, dickory, dock. The mouse ran up the clock. The clock struck one, The mouse ran down, Hickory, dickory, dock William Wallace Denslow (May 5, 1856 - March 29, 1915) was an American illustrator and caricaturist remembered for his work in collaboration with author L. Frank Baum, especially his illustrations of The Wonderful Wizard of Oz. Denslow's Mother Goose: being the old familiar rhymes and jingles of Mother Goose by William Wallace Denslow, hand-lettered by Frederic William Goudy, 1901.