If you've never read a Holling C. Holling book, you're in for a treat! These are lovely, "old fashioned" books that simultaneously educate and entertain. Each blends science, history, and geography into a narrative told from the viewpoint of a central "character"'s adventures or experiences. Paddle-to-the-Sea covers the Great Lakes, St. Lawrence River, and North Atlantic. Tree in the Trail includes the Great Plains and Southwest. Minn of the Mississippi leads children on an adventure down the Mississippi River and into the Gulf of Mexico. Seabird presents an overview of world geography. Pagoo follows the life of a young hermit crab, trying to grow up in a tide pool - without being eaten along the way.