Unlocking History number (UH#)

UH037



Original

WWII Prisoner of War (POW) Letter from a Son to his Mother, MIT Libraries, Unlocking History Research Group archive, MC0760, Box 31.



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

LUV037 https://youtu.be/TaLrx9Jl8GA



Instructional video info transcription

Forthcoming



Letterlocking Category number (LC #)

LC27Z        



Letterlocking Format number (LF #)

4RXW 



Security score

Zero



Assessment of Confidence in assigning LC#

Attested



Substrate

Paper



Dimensions

Forthcoming

Opened (in mm):       

Letterpacket (in mm): 



Manifestation

Opened



Distinctive letterlocking style(s)

Military stationery



Locking mechanism

Lock



Security enhancements

Forbidden to secure shut.        



Letterlocking category formula (shorthand)

LC27 

Fold + Slit/Hole + Lock-SA 

(F + S/H + LSA)



Letterlocking manipulation sequence (shorthand)

Fold + fold + lock-SA + slit (F + F+ LSA+ S)



Locking instructions

Military stationery with pre shaped lock-SA and slit. Create a C-fold: Fold short-edge to short-edge fold bottom edge up. Keep folded. Fold short-edge to short-edge top lock-SA panel down. Insert lock-SA through the slit. Write address in designated area.



Images 

Forthcoming



Foldable(s)

Forthcoming



Step-by-steps 

Forthcoming



Substrate map

Forthcoming



Virtual unfolding results

NA



Manipulations

Forthcoming

Writing: NA

Postal: Pre-printed postage instructions 

Opening: NA 

Filing (Storage, Display): NA

Repair: NA



Damage

NA



Features

Dirt on panels/ in crease



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)

Original UH0037

Dino Belardinelli to Signora Natalina Belardinelli, Oran, Algeria (December 27, 1944). MIT Libraries, Unlocking History Research Group archive, MC0760, Box 31.



Model (LUV037)

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



Video

Jana Dambrogio and the Unlocking History Research Group, “WWII prisoner of war letter from a son to his mother, Oran, Algeria (27 December 1944).” Letterlocking Instructional Videos. Unlocking History number 0037/Letterlocking Unique Video number: 0037. Filmed: July 2016. Posted: July 2016. Duration: 0:34. URL: https://youtu.be/TaLrx9Jl8GA. Accessed March 4, 2025.






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