Unlocking History number (UH#)

UH0054



Original

 Rowe Triangle Letter, Connecticut



Model and research notes

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 25.



Letterlocking Unique Video number(s) (LUV #s) & Instructional video(s) URL

LUV054 https://youtu.be/fj9eKSCaDWc 



Instructional video info transcription

Forthcoming



Letterlocking Category number (LC #)

LC02Z



Letterlocking Format number (LF #)

3T



Security score

Zero



Assessment of Confidence in assigning LC#

Attested



Substrate

Paper



Dimensions

Forthcoming




Manifestation

Opened



Distinctive letterlocking style(s)

Triangle format



Locking mechanism

Tuck



Security enhancements

NA     



Letterlocking category formula (shorthand)

LC3 

Fold + Slit/Hole 

(F + S/H)



Letterlocking manipulation sequence (shorthand)

Forthcoming



Locking instructions

Forthcoming



Images 

Forthcoming



Foldable(s)

Forthcoming



Step-by-steps 

Forthcoming



Substrate map

Forthcoming



Virtual unfolding results

NA



Manipulations

Writing: NA

Postal: NA

Opening: NA,

Filing (Storage, Display): NA

Repair: NA



Damage

NA



Features

NA



Article(s)

NA



Book 

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.



Citation for the letter(s)

UH0054

Original and model

Mary Rowe, MIT Libraries, Unlocking History Research Group archive, MC0760, Box  31.



Video

LUV054 

Jana Dambrogio and the Unlocking History Research Group, “Rowe Triangle Letter, Connecticut USA (1940s),” Letterlocking Instructional Videos. Unlocking History number 0054/Letterlocking Unique Video number: 0054. Filmed: December 2015. Duration: 1:50. URL: https://youtu.be/fj9eKSCaDWc. Accessed: March 4, 2025.






Return to