Allen, T. (2007). George Washington, Spymaster: How the Americans Outspied the British and Won the Revolutionary War. National Geographic Children’s Books.
Central Intelligence Agency. (2007). Intelligence in the War for Independence. [Website]
The Culper Spy Ring and Benedict Arnold. (n.d.). [Website]
Library of Congress. (1999). George Washington’s Papers. [Website]
Spy Letters of the American Revolution. (1999). [Website]