Unlocking History number (UH#)

UH 6090


Original

Giovanni Runco to the management of the Ritmeier Institute [for the blind], in Braille, Italy (March 22, 1930).

Model and research notes

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 55.


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

Forthcoming


Instructional video info transcription

Forthcoming


Letterlocking Category number (LC #)

LC11Z


Letterlocking Format number (LF #)

4RW


Security score

Zero


Assessment of Confidence in assigning LC#

Inferred


Substrate

Paper


Dimensions

Forthcoming

Opened (in mm):       

Letterpacket (in mm): 


Manifestation

Opened, Partially opened, Refolded, Unopened, Unopened (virtually opened)


Distinctive letterlocking style(s)


Locking mechanism

Lock


Security enhancements

NA     


Letterlocking category formula (shorthand)

Forthcoming

A formula to express categories. (A way of writing out category formulas using abbreviations.)


LC11 

Fold + Slit/Hole + Lock-O 

(F + S/H + LO)


Letterlocking manipulation sequence (shorthand)

Fold (two nested folios) + hole + lock-O 


Locking instructions

Write letter. Fold short-edge to short-edge fold. Keep folded. Stab a hole through all panels of the letterpacket near the center of the short edges. Insert the metal fastener (inferred due to dirt pattern on outer panel). Splay prongs to secure letterpacket. Flip packet. Write address.


Images 

Forthcoming



Foldable(s)

Forthcoming


Step-by-steps 

Forthcoming


Substrate map

Forthcoming


Virtual unfolding results

NA


Manipulations

Writing: 6 dot braille embossing letter character formation

Postal: Postage marks

Opening: NA, brass fastener (lock-O) inferred, not present

Filing (Storage, Display): NA

Repair: NA


Damage

NA


Features

Dirt on panels/ in crease


Article(s)


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)

UH6090

Original

Giovanni Runco to the management of the Ritmeier Institute [for the blind], in Braille, Italy (March 22, 1930). MIT, MC0760, Container 32.


Model

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


Original 

MIT Libraries, Unlocking History Research Group archive, MC0760, Box 55.




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