Letterlocking - BYUradio

LetterlockingTop of Mind with Julie Rose • Season 1, Episode 1557, Segment 2

Mar 18, 2021 • 17m

People used to secure their correspondence with fancy folding, though those techniques were lost when cheap envelopes became widely available in the mid-1800s. MIT Libraries conservator Jana Dambrogio leads a team that’s unlocking the secrets of letter locking by using X-ray scanning and algorithms to read the locked letters and see exactly how they’re folded.

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