Cannon fire! That’s what Jack and Annie hear when the Magic Tree House whisks them back to the time of the American Civil War. There they meet a famous nurse named Clara Barton and do their best to help wounded soldiers. It is their hardest journey in time yet—and the one that will make the most difference to their own lives!
<b>Mary Pope Osborne</b> is the award-winning author of many distinguished books for children and young adults, including the bestselling Magic Treehouse series; <i>Favorite Medieval Tales, </i> illustrated by Troy Howell; <i>American Tall Tales, </i> illustrated by Michael McCurdy; <i>Rocking Horse Christmas, </i> illustrated by Ned Bittinger; and A<i>daline Falling Star.</i> The former president of the Author’s Guild, she lives in New York City with her husband, Will.