Unlocking History number (UH#)
UH0061
Original
Empress Maria Theresa's Letter to Cardinal Ignazio Boncompagni Ludovisi
Model and research notes
MIT Libraries, Unlocking History Research Group archive, MC0760, Box 26, 52.
Letterlocking Unique Video number(s) (LUV #s) & Instructional video(s) URL
LUV061 https://youtu.be/W9IQP93tzFU
Instructional video info transcription
Forthcoming
Letterlocking Category number (LC #)
LC16L
Letterlocking Format number (LF #)
4RXW
Security score
Low
Assessment of Confidence in assigning LC#
Attested
Substrate
Paper
Dimensions
Opened (in mm): H: 374mm x W: 245mm
Letterpacket (in mm): H: 103mm x W: 194mm
Manifestation
Opened
Distinctive letterlocking style(s)
Two-piece lock-O
Locking mechanism
Tuck
Security enhancements
Authenticated covered seal
Letterlocking category formula (shorthand)
LC16
Fold + Tuck + Slit/Hole + Adhere + Lock-O
(F + T + S/H + A + LO)
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: Margin folds, Mourning Stationery
Postal: NA
Opening: Tears, Seal tears
Filing (Storage, Display): NA
Repair: NA
Damage
Silverfish grazing
Features
Dirt on panels/ in crease
Radiating wrinkles
Wrinkles
Article(s)
2014. Letterlocking: The Art & Security of Letter writing in Book Arts, Arts du Livre Canada, Vol.5 (2014): 2. 21–23.
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)
UH0061
Original
Empress Maria Thérèsa of Austria to His Eminence Cardinal Ignazio Boncompagni Ludovisi (December 17, 1775). Boncompagni Ludovisi Archive (Villa Aurora), Rome, Italy.
Model
MIT Libraries, Unlocking History Research Group archive, MC0760, Box Box 26, 52.
Video
LUV061
Jana Dambrogio and the Unlocking History Research Group, “Empress Maria Theresa’s letter to Cardinal Ignazio Boncompagni Ludovisi Austria (17 December 1775).” Letterlocking Instructional Videos. Unlocking History number 0061/Letterlocking Unique Video number: 0061. Filmed: December 2015. Duration: 4:32. Posted: March 2016.
URL: https://youtu.be/W9IQP93tzFU. Accessed March 4, 2025.