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.