George Washington, Spymaster: How the Americans Outspied the British and Won the Revolutionary War (Thomas B. Allen)

Summary: 

Follow the action as 1775 dawns, and Washington finds himself in serious trouble.  At war with Britain, the world's most powerful empire, his ragtag army possesses only a few muskets, some cannons, and no money.  The Americans' only hope is to wage an invisible war--a war of spies, intelligence networks, and deception.

Enter the shadowy world of double agents, covert operations, codes, and ciphers--a world so secret that America's spymaster himself doesn't know the identities of some of his agents.  Meet members of the elusive Culper Ring, uncover a "mole" in the Sons of Liberty, and see how invisible ink and even a clothesline are used to send secret messages.  You can even use Washington's own secret codebook.  Experience at close quarters the successes and failures of the Americans as they strive to outwit the British.  Meet the chief of covert operations, one Benjamin Franklin, and several other surprising players in America's secret war. (from amazon.com) 

Where can I find it?: Lower/Middle School library, Lithgow building

Tags: Biographies; Biography; Espionage; Generals; History; Juvenile works; Literature; Presidents; Secret Service; Spies; United States; Washington, George, 1732-1799