![A Big Day for Baseball](http://alittlebookish.com/cdn/shop/products/abigday_{width}x.gif?v=1575307238)
Early Chapter Series, Magic Tree House #29
Morgan the librarian gives Jack and Annie magical baseball caps to wear at a special ball game in Brooklyn, New York. The magic tree house whisks them back to 1947 where they meet pioneering player Jackie Robinson and solve a mystery. Illustrations.