#preservethefolds

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Thank you, everyone! Surprise: It’s happening! Our book is coming out. Letterlocking: The Hidden History of the Letter by Jana Dambrogio, Daniel Starza Smith, with the Unlocking History Research Group. Publication date: March 4, 2025. Publisher: The MIT Press. 320 pp, 8x9 inches, 261 color illustration. Hardcover ISBN: 9780262049276, $40.00. Pre-order @mitpress @penguinrandomhouse @amazon @barnesandnoble @bookshop_org @Indiebound @indigo @booksamillion. 

Description The rich history of a centuries-old document security technology—folding and securing a letter into its own envelope for delivery—and a comprehensive guide to learning how to make your own locked letters. Before the invention of the gummed envelope in the 1830s, how did people secure their private letters? The answer is letterlocking—the ingenious process of folding, slitting, and securing a letter with a strip of paper and sealing wax so that it becomes its own envelope. The practice, used by historical figures ranging from Elizabeth I and her spymaster to Japanese samurai lords, and nearly entirely forgotten, was an everyday activity for centuries, across cultures, borders, and social classes. In Letterlocking, Jana Dambrogio and Daniel Starza Smith, experts who have pioneered the field over the last ten years, tell the fascinating story of letterlocking within epistolary history, drawing on real historical examples from all over the world. Letterlocking will be accompanied by a website, freely accessible scholarly articles, and instructional videos and diagrams, as well as foldable, tear-out sheets with instructions on how to fold and lock a letter. 

Thank you, @barnesandnoble for offering a pre-order discount to your members April 19, on our book “Letterlocking: The Hidden History of the Letter” #BNPreorder 

#mitpress #letterlocking #amsr #origami #documentsecurity #letters #correspondence #fold #diy #security #seal #secret #love #write #encryption #spies #invisible #teaching #instructions #book #publication #launch #video #share 

https://www.barnesandnoble.com/w/letterlocking-jana-dambrogio/1145200759?ean=9780262049276

Alt text: A sparkling star made of magenta and yellow. In the center the date: March 4, 2025. Blue background with white lettering that says, "Letterlocking, The Hidden History of the Letter by Jana Dambrogio, Daniel Starza Smith, with the Unlocking History Research Group. Pre-order now @mitpress @penguinrandomhouse @amazon @barnesandnoble @bookshop_org @Indiebound @indigo @booksamillion

Thanks to Eirene Pianeta for sharing the gif design template in Canva. 

Citation information: Authors: Jana Dambrogio and the Unlocking History Research Group. Title: "Surprise: It's Happening! Letterlocking: The Hidden History of the Letter. Pub date: March 4, 2025, USA (2024))." Letterlocking Instructional Videos. Unlocking History number 6261/Letterlocking Unique Video number: 0304. Date filmed: April 19, 2024. Duration: 1:52. Date posted: April 19, 2024. Video URL: [Insert URL]. Date accessed: [Date].

Copyright 2024. Jana Dambrogio and Massachusetts Institute of Technology (MIT). All rights reserved. The following copyrighted material is made available under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License https://creativecommons.org/licenses/by-nc/4.0/. Contact the MIT Technology Licensing Office for any other licensing inquiries.

To find out more about letterlocking, visit http://letterlocking.org and follow us on social media @letterlocking.

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Letterlocking: Lucy May Schofield's "Pis'ma-treigol'niki = Letters of triangles," England (2013)

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Letterlocking: Mary Queen of Scots last letter, England (1587)

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Letterlocking: Intelligencer Simeon Fox’s Dagger-Trap Letter sent from Venice (1601)