Using computer algorithms and an X-ray scanner designed for dental research, an international team of researchers has unlocked the secrets of a tightly folded letter sealed since 1697. The ...

Houston Chronicle national reporter Kim Cobb wrote Timothy McVeigh on April 27, following a lengthy interview with his estranged trial attorney, Stephen Jones. The letter was mailed to McVeigh at ...

For instance, a February 8, 1587, letter from Mary, Queen of Scots, to her brother-in-law, King Henri III of France, was sealed using a so-called "butterfly lock"—just one of hundreds of locking ...

Letters have a firm 200-word limit and will be edited for grammar, clarity and accuracy. The person who signs the letter must be the author. Anonymous letters will not be considered.