Mary Pope Osborne perfectly blends fantasy, adventure, and history in this paperback edition of the bestselling Magic Tree House chapter book. Jack and Annie have a new mission to help save the life of Merlin's beloved baby penguin, Penny- They must travel in the magic tree house to Abraham Lincoln and get a special feather from him! But when they visit the White House in 1861, they find the new president overwhelmed by his busy schedule as he tries to save a divided nation. A magic potion and a wish instantly transport Jack and Annie to a mysterious woods. Are these the same woods where Abraham Lincoln takes his daily horse ride? If so, can a ragged orphan named Sam help them find Abe? Or will Jack and Annie have to give all their strength and time to helping Sam instead? It's a race against time as Jack and Annie try to do the right thing and help a new friend--and still save a president, a troubled nation, and Penny, as well! The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Are you ready for a presidential adventure? Jack and Annie are! They are whisked back to Washington, D.C., in 1861. Jack can't wait to meet Abraham Lincoln himself! But the new president is too busy to see them, as he is desperately trying to save a nation in crisis. It's a race against time as Jack and Annie try to aid a president and a troubled nation! Formerly numbered as Magic Tree House #47, the title of this book is now Magic Tree House Merlin Mission #19- Abe Lincoln at Last! Did you know that there's a Magic Tree House book for every kid? Magic Tree House- Adventures with Jack and Annie, perfect for readers who are just beginning chapter books Merlin Missions- More challenging adventures for the experienced reader Super Edition- A longer and more dangerous adventure Fact Trackers- Nonfiction companions to your favorite Magic Tree House adventures