Letterlocking – Unlocking History
Welcome to letterlocking! You can find essential information about letterlocking and the Unlocking History research team on this page. We will be updating the website regularly in the coming months, including major uploads to the Dictionary of Letterlocking (DoLL) – so please check in periodically, and follow us on social media for all the news.
Unlocking History is the name for a group of conservation specialists, scholars, publishers, book-artists, imaging specialists, engineers, and scientists who are interested in the historical practice of letterlocking. We want to make sure letters are conserved properly so that they can be studied for the historical secrets they reveal. The material features of letters can speak to us about the past, but in order to hear them we have to learn their language. Unlocking History is dedicated to bringing together all the tools we need to do so – a dictionary, instructional videos, images, and hands-on workshops in libraries, museums, universities, and schools around the world.
Letterlocking and the Dictionary of Letterlocking (DoLL)
Letterlocking refers to the technology of folding and securing an epistolary writing substrate to function as its own envelope – a vital communications technology before the invention of the mass-produced envelope in the 19th century. A full definition of letterlocking can be found in the Dictionary of Letterlocking (DoLL).
Documenting the physical details of well-preserved letters has helped us discern and define different locking formats with multiple levels of built-in security and various authentication devices. DoLL will explain the key differences between these formats – and show you how to make them. With practice, you will be able to examine flattened historical letters in libraries and archives, and make models to show you which letterlocking format the writer or secretary was using. These formats may correlate to the sensitivity of the information contained inside, or contribute to the meaning of the text they carry.
Imaging and Conservation
The study of letterlocking is important for the preservation of documents because it informs conservators about the evidential value of folds, creases, and intentional damage.
View and share images of letterlocking preservation: #PreserveTheFolds.
Letter writing materials tools and techniques
The study of letterlocking encompasses research into the materials, tools, and techniques of writing. Studying the material aspects of letter-writing – the quality of paper, for example, or the specific way wax was applied – offers researchers a chance to gain a richer understanding into past means of communication, allowing them to explore what is expressed by a document beyond its written text. Unlocking History members have spent time trying to replicate the conditions of early modern letter-writing, making ink and wax according to early recipes, working with handmade paper, and attempting to break into locked letters undetected, as if we were seventeenth-century spies. We also study the ways that developments in communication technologies interact with language, literature, and culture throughout history (for example, when we talk about giving someone "the seal of approval").