Clara Barton #1 : Angel of the Battlefield

While exploring The Treasure Chest, Felix and Maisie are transported to a Massachusetts farm in 1836. Disappointed that they have not landed in their beloved New York City, they wonder why they were brought to Massachusetts to meet a young girl named Clara Barton. Perhaps Clara has a message for the twins? Or maybe they have one for her? When their parents divorce, twelve-year-old twins Felix and Maisie move with their mother to live in the attic of a historic Newport, Rhode Island, mansion where they discover a hidden room that carries with it an intriguing secret