Spies of the Revolution by Katherine and John Bakeless Book

A strange message in code! Messages in silver bullets and jacket buttons! Letters written in invisible ink.All across revolutionary America, spies for the patriots and the redocats are stealing through enemy lines, getting vital information.Who are these spies? No one can be sure. Who would suspect the schoolmaster, or a fourteen-year-old boy, a Quaker housewife, a Yankee farmer, a Boston Surgeon?Yet each one is risking his life on a secret mission that may change history.