Using their magic tree house, Jack and Annie travel back to the time of the American Revolution and help General George Washington during his famous crossing of the Delaware River.
Categories:
["nyt:series_books=2007-03-10""Tree houses""Juvenile fiction""Fiction""New York Times bestseller""Revolutionary War""Magic""History""Time travel""Brothers and sisters""Voyages and travels""Space and time""Fantasy""Happiness""Adventure stories""Jack (Fictitious character : Osborne)""Annie (Fictitious character)""Children's fiction""Washingtongeorge1732-1799fiction""Magicfiction""United stateshistoryrevolution1775-1783fiction""Time travelfiction""Tree housesfiction""Annie (Fictitious character : Osborne)""Magia""Historia""Spanish language materials""Ficci\u00f3n juvenil""Viaje a trav\u00e9s del tiempo""Caba\u00f1as en los \u00e1rboles"]