Magic Tree House #22: Revolutionary War on Wednesday (A Stepping Stone Book(TM))
If it's Wednesday, it must be Revolutionary War day. Jack and Annie,  stars of the Magic Tree House series, are in for another adventure in their  time- and space-traveling tree house. Mysterious magical librarian Morgan le Fay  has set four new tasks for the siblings. Jack and Annie must find four special  kinds of writing for Morgan's library in order to save Camelot, the ancient  kingdom of King Arthur. InCivil  War on Sunday, the pair traveled back to the 1860s to collect a list of  rules ("something to follow") from famous nurse Clara Barton. Now they discover  they must visit another war era: the Revolutionary War. Jack and Annie set aside  their apprehension and soon they're spinning back through time to Christmas Day,  1776, on the banks of the Delaware River in Pennsylvania, where they encounter  none other than the man on the dollar bill himself, George Washington! The  children accidentally-on-purpose end up embroiled in the famous  commander-in-chief's mission, where they not only play a part in convincing  Washington to carry on with his patriotic duty, but also find the second kind of  writing for Morgan's library: "something to send."Award-winning author Mary Pope Osborne's young adventure series, The Magic Tree  House, is immensely popular among children and teachers alike, promoting a  fascination with history--and reading--no textbook can match. (Ages 6 to 9)--Emilie Coulter