Osborne, Mary Pope
Title: Monday of the Mad Genius
Book Condition: New
Publisher: Random House August 2007
0375837299 / 9780375837296
Seller ID: 20071115127856
JACK AND ANNIE are on a mission to save Merlin from his sorrows Charged with finding the second of four secrets of happiness, the brother-and-sister team travel back in the magic tree house to the period known as the Renaissance. This time, Jack and Annie will need more than a research book and a magic wand. They'll need help from one of the greatest minds of all time. What will they learn from Leonardo da Vinci?