Book excerpt: Pull on your mittens and head outside with Lois Ehlert for a snowball day Grab some snow and start rolling. With a few found objects, like buttons and fabric and seeds, and a little imagination, you can create a whole family out of snow. "Ehlert uses collages of cut paper and vibrant, textured objects to dazzling effect in her tribute to building a snowman--and snowgirl and snowcat. Her inventive designs extend the reader's perspective and tweak the limits of the picture-book format."--Publishers Weekly