Good Book: John and Tom, by Willem Lange, illustrated by Bert Dodson

This wonderfully illustrated children’s book tells the true story of the remarkable Morgan horse named Tom, who rescued a young man pinned by a fallen tree in the winter-cold woods of Vermont.

This book is published by the Vermont Folklife Center. The above link is to their children's books page.

If you know of any other good books for younger children that are based on a true story, please tout them in the comments section.