Like Tana Hoban's photographic books, an exploration of related concepts through visual images—in this case, the lovely, evocative paintings of a Danish artist. The simple text points out that ``Footprints come and footprints go'' with a series of direct statements (``Footprints in the mud stay put until a gentle rain washes them away''), then follows shadows through a day before making a final comparison: ``Shadows...go, never leaving footprints.'' What's special here is the impressionistic double-spread art, effectively conveying the evanescence of these fleeting images with an imaginative appeal that goes well beyond the text. (Picture book. 4-7)