Cypher Like a Spy!

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A Patriot leader might be secretly sending information to the British Army! Can you crack the code and solve the mystery?  
Best for Ages 9 and up 

This event is a part of: “February Vacation in Your National Parks,” February 15-23, 2020 
Looking for fun things to do during February vacation? The National Parks of Boston are offering lots of FREE, family-friendly drop-in activities. For more information, see: