Letterlocking

The Hidden History of the Letter

Jana Dambrogio, Daniel Starza Smith, the Unlocking History Research Group

$79.99

Hardback

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English

MIT Press
08 April 2025

Encyclopaedias & reference works

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.

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 securing a letter using a combination of folds, tucks, slits, or adhesives such as sealing wax, so that it becomes its own envelope. This almost entirely forgotten practice, used by historical figures ranging from Elizabeth I and her spies to Japanese samurai lords, 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.

Fully illustrated with more than 300 images and diagrams, including a dictionary of sixty technical terms and concepts, Letterlocking describes the essential precepts of the practice and provides sources of practical support needed for beginner and advanced users of letterlocking. The authors also advocate for the understanding of letterlocking and for its inclusion in a range of intellectual and cultural research, from conservation science and archival databases to historical television shows. By the end of the book, readers will learn how to make locked letters, study letters that may have been locked, and categorize those letters using systems the authors developed while studying more than 250,000 historic letters.

Letterlocking is 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 models of extant historical letters.

By: Jana Dambrogio, Daniel Starza Smith
Contributions by: the Unlocking History Research Group
Imprint: MIT Press
Country of Publication: United States
Dimensions: Height: 229mm, Width: 216mm,
Weight: 567g
ISBN: 9780262049276
ISBN 10: 0262049279
Pages: 528
Publication Date: 08 April 2025
Audience: General/trade , ELT Advanced
Format: Hardback
Publisher's Status: Active

Jana Dambrogio is Thomas F. Peterson (1957) Conservator for Massachusetts Institute of Technology Libraries. She previously held positions at the US National Archives, the United Nations, and the Vatican Apostolic Archives. Daniel Starza Smith is Senior Lecturer in Early Modern English Literature at King's College London. His books include John Donne and the Conway Papers and (with coeditor Joshua Eckhardt) Manuscript Miscellanies in Early Modern England. He is General Editor of the correspondence of John Donne for Oxford University Press. Dambrogio and Smith are founders of the Unlocking History Research Group (letterlocking.org), an international and interdisciplinary team of experts dedicated to studying and preserving historical communication technologies.

Reviews for Letterlocking: The Hidden History of the Letter

“Excellent… This book is not only for academics: Step-by-step diagrams provide a how-to for those looking to lock their own letters. Pass a note to a friend, or foe, in one neat package.” —The Wall Street Journal