Several won the Caldecott Medal for picture book artwork, including "A Ball for Daisy" in 2012, "The Lion and the Mouse" in 2010 and "Flotsam" in 2007.

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And so in the fable mentioned above, when the lion is hopelessly ensnared in a net, it is the lowly mouse the lion once spared, that nibbles through the ropes and sets him free.

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