Illustrations for books usually enhanced or explained the text, but in the latter quarter of the 19th cent. Three artistic giants, Walter Crane, Kate Greenaway, and Randolph Caldecott, gave a new dimension to illustration. They produced the picture storybook in which interdependent text and illustration are given equal emphasis. Crane's nursery-song prints in Baby's Bouquet (1908) combine soft colors with bold composition. Greenaway's Under the Window (1878) is enhanced by delicate garden colors. In the 1870s and 80s Caldecott's nursery books displayed harmonious linear composition and warm color.