Slave quilt
19 of 27 from The crypto machines of the NSA museum (photos)
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Though many people look at quilts like this and see only quaint patterns, it appears that quilts made by slaves in the early 19th century often contained symbols conveying messages of information and advice to others preparing to escape to freedom.
Click here to read the related story on the National Cryptologic Museum, and click here to check out the entire Road Trip 2010 package.
August 6, 2010 4:00 AM PDT
Photo by: Daniel Terdiman/CNET
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