letterlocking category 27
See UH0169, an example of letterlocking category 27,high security score. See UH0037, an example of a letterlocking category 27, zero security score.
Unlocking History Concept uri
https://letterlocking.org/doll/concept/252
Preferred label
letterlocking category 27
Alternative label
LC27; fold + slit/hole + lock-sa; f + s/h + lsa; slit and tongue; tongue of incision
Scope note
A letterpacket formed using the following manipulations: fold, slit/hole, lock-SA. Assigned security score: zero or high.
Top concept
techniques
https://letterlocking.org/doll/concept/611
Broader/Parent concept
letterlocking category
https://letterlocking.org/doll/concept/225
Related concept
security score
https://letterlocking.org/doll/concept/469
The Arts & Architecture ThesaurusⓇ Online, The Getty Research Institute Concept uri
Not in AAT
The Language of Bindings Thesaurus (LoB) Concept uri
Not in LoB
Scope note source reference
Source
Jana Dambrogio and Daniel Starza Smith with the Unlocking History Research Group. Letterlocking: The Hidden History of the Letter. Cambridge and London: MIT Press, 2025.
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