"On This Date in History" Calendar
1587: Mary, Queen of Scots, executed for treason.
8 February 1587: Mary, Queen of Scots, was executed for treason, as a result of a solution of a cryptosystem she was using in a conspiracy to assassinate Queen Elizabeth (Babington Plot). Pictured here is the cipher code used by Mary, Queen of Scots. Mary-cipher-code. Licensed under Public Domain via Wikipedia