The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie!!
When Jack and Annie got back from their adventure in Magic Tree House Merlin Mission #23: High Time for Heroes, they had lots of questions. How did Florence Nightingale change nursing? Who helped women get the vote?...

"In Courageous Canine, you'll read three true stories of amazing animal heroes. First meet Lilly, a playful pit bull who bravely pulled her owner from the path of a speeding train; two pods of dolphins that saved swimmers from the most powerful predator on the planet; and two gorillas that proved just how alike apes and humans really are. Follow along on their incredible adventures as these awesome animals save the day!"-- Provided by publisher.

Discover true stories of superstars, war heroes, world leaders, gusty gals, and everyday women who changed the world.