The Boat in the Tree, by Tim Wynne-Jones, illustrated by John Shelley, Front Street Books, 2007.
I found this book in a thrift store the other day, and it looked intriguing, so I picked it up.
The story is surprisingly sweet, and told rather well. An only child becomes an older brother pretty much overnight when another child is adopted into the family. There is an adjustment period.
But it was the illustrations that made me buy this book, and it is the because of the illustrations that I love this book. The illustrations are so deftly-drawn and so imaginative, that it is like having a daydream brought to life.