Christopher Ludwick was a German-born American patriot with a big heart and a talent for baking. When cries of "Revolution!" began, Christopher was determined to help General George Washington and his hungry troops. Not with muskets or cannons, but with gingerbread!     Cheerfully told by Mara Rockliff and brought to life by Vincent Kirsch's inventive cut-paper illustrations, Gingerbread for Liberty is the story of an unsung hero of the Revolutionary War who changed the course of history one loaf at a time.