Recent research highlights the use of letterlocking techniques by Queen Elizabeth, Catherine de’ Medici and Mary Queen of Scots.
National Library of Scotland |
To safeguard the most important royal correspondence against snoops and spies in the 16th century, writers employed a complicated means of security. They’d fold the letter, then cut a dangling strip, using that as an improvised thread to sew stitches that locked the letter and turned the flat writing paper into its own envelope. To get inside, a spy would have to snip the lock open, an act impossible to go undetected.
Catherine de’ Medici used the method in 1570 — a time she governed France while her ill son, King Charles IX, sat on its throne. Queen Elizabeth did so in 1573 as the sovereign ruler of England and Ireland. And Mary Queen of Scots used it in 1587 just hours before her long effort to unite Britain ended in her beheading.
“These people knew more than one way to send a letter and they chose this one,” said Jana Dambrogio, lead author of a study that details Renaissance-era politicians’ use of the technique, and a conservator at the M.I.T. Libraries. “You had to be highly confident to make a spiral lock. If you made a mistake, you’d have to start all over, which could take hours of rewriting and restitching. It’s fascinating. They took great pains to build up their security.”
Disclosure of the method’s wide use among European royalty is the latest venture of a group of scholars, centered at M.I.T., into a vanished art they call letterlocking — an early form of communications security that they’re busy resurrecting. Early last year, they reported their development of a virtual-reality technique that let them peer into locked letters without tearing them apart and damaging the historical record.
Now, in a detailed article that appeared last month in the Electronic British Library Journal, the scholars lay out their expanding universe of discoveries and questions. They showcase instances of spiral letterlocking among the queens and posit that the method “spread across European courts through royal correspondence.”
M.I.T. Libraries |
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