Henry (and of course Mudge) loves to visit Great Grandpa Bill. He lives in a house with a lot of other granpas who like to play with a little boy and his dog. But when Henry discovers a swimming pond near the granpas' house, he finds out how much fun the grandpas really can be.

Henry and his dog Mudge enter a snowman contest in this nineteenth Ready-to-Read book of their adventures.

Henry sees a sign about a snowman contest in the park Can Henry, his father, and his big dog Mudge come up with the best snowman plan to win the contest?