How does a cipher and code, used by a failed politician, dropped into the middle of a trial for treason in 1807, involving then-president Thomas Jefferson and Chief Justice John Marshall, lead to a ...

It was a mystery over 200 years old. Buried in the depths of the letters and papers of President Thomas Jefferson, a coded messaged sat unsolved – until now. Patterson and Jefferson were both ...

For more than 200 years, buried deep within Thomas Jefferson's correspondence and papers, there lay a mysterious cipher -- a coded message that appears to have remained unsolved. Until now. The ...

Thomas Jefferson is known for a lot of things—writing the Declaration of Independence, founding the University of Virginia, owning hundreds of slaves despite believing in the equality of men—but his ...