03:03

Letterlocking: René Milleran’s independently folded "tuck-and-seal," France (1690, 1742) (UH0068)

04:21

Uncle Derchey’s tucked, locked, and sealed cautionary tale, France (1699) (UH0096)

05:25

Brienne Postal Archive: A two-piece locked letter from Cosimo III de' Medici, Italy (1701) (UH0164)

02:29

Brienne Postal Archive: A letter to the Count of Argenson, France (1689) (UH0175, UH5371)

02:22

Daddy can't pay your debts forever!: A locked letter, France (1706) (UH0098)

02:47

Brienne Postal Archive: Adriaan Boreel’s pentagonal-shaped letterpacket (c.1703) UH0091

03:19

11-year-old Emily Dickinson's roll-folded locked letter to her brother, USA (May 1, 1842)

01:51

Surprise: It's Happening! Letterlocking: The Hidden History of the Letter. Pub date: March 4, 2025

03:05

Corrected folding sequence: Jane Austen's roll-folded locked letter to Cassandra, England, (1799)

01:29

Henri Christophe’s tuck-and-seal letter to Toussaint Louverture’ Haiti (1802)

02:31

Phillis Wheatley’s tuck-and-seal locked letter to Obour Tanner, USA (July19, 1772)

04:25

Hedi Kyle's accordion-folding technique, USA (August 8, 2023)

02:37

Phillis Wheatley’s rolled, tuck, and seal letter to Obour Tanner, USA (1774) (UH0227)

39:32

Jana and Terra from MIT’s Wunsch Conservation Lab on Nick Sikellis's The Intangible Podcast (2023)

03:39

Did the independent folds of Ira Aldridge’s letter once contain an insert? Ireland (1835) (UH6181)

01:54

Triangle-shaped Masonic Lodge meeting invitation, La Vertueuse, 25 August 5796 (UH0171)

02:09

Lieutenant D'Alban, a nonagon-shaped letterpacket, & a Masonic suitcase, 1798 (UH0220)

05:37

Message in a Bottle: Liesbet Raens’ undelivered letter to her husband, Antwerp (1533) (UH6127)

01:53

Malta Notarial Archives: A letter written in Moroccan dialect, Malta (date unknown) (UH0221)

04:59

Letterlocking: Love bug – numbered foldable version, USA (2020) (UH0038)

02:51

Incorrect fold sequence: Jane Austen’s signed letter to Cassandra Austen, England (1799) (UH0168)

01:40

Brienne Collection: A virtually unfolded letter to Madame Collin, France (c.1690–1720) (UH0218)

01:35

Jacques Sennacques’s virtually unfolded letter to his cousin, France (1697) (UH0217)

02:49

Letterlocking: Unlocking History’s Launch Little Book of Locks (2021) (UH6089)

03:08

Brienne Collection: A virtually unfolded letter to Madame de Mesgral, France (c.1690–1720) (UH0219)

02:04

Letterlocking: Little book of Locks for Shakespeare Prop Letterpackets (2019) (UH0245)

07:59

Catherine de'Medici's Spiral-Locked letter to her son, Europe (1500s) alt technique (UH0043)

06:31

Elizabeth I to Sadler: Triangle lock w/slit perpendicular to fore-edge, England (1584) (UH0015)

02:39

Letterlocking: Brienne Postal Archive: A letter to Monsieur Michel Richel, France (1690) (UH0235)

02:59

Brienne Postal Archive: Monsieur Pillard’s letter to Mr. Blondelle, Holland (1698) (UH0234)

03:23

Burgetta Quack’s letter to ​​Johannes Elderveld, ​​Doesburg, The Netherlands, (c. 1800) (UH0231)

04:04

Maaggriet Opper’s letter to her husband ​​Willem Bauest Jagger (c. 1777 and 1821) (UH0230)

04:34

Devereux to Elizabeth inspires prop letter in Shakespeare’s Merchant of Venice (c. 1590s) (UH0130)

06:29

Letterlocking: A spiral-locked letter to the Duke of Buckingham, Europe (1624–1625) (UH0080)

06:14

Letterlocking: A spiral-locked letter from a lady to Sir Francis Walsingham (1588) (UH0079)

02:15

Letterlocking: Brienne Postal Archive: A letter written between two Catholic women (1698) (UH0134)

00:45

Mary Queen of Scots Spiral Lock Trivia Debut on BBC Have I Got a Bit More News for You (2021)

03:22

Letterlocking: It's A Wonderfold World: Thanks a Million!, USA (2021)

10:50

Alt ending: Queen Elizabeth I’s holograph spiral-locked letter to Henry III, England (1570s)(UH0131)

07:52

Catherine de’ Medici’s concealed spiral-locked letter to Raimond de Beccarie (c.1570) (UH0224)

02:37

Letterlocking: Shakespeare props, Merchant of Venice, Antonio to Bassanio: “the body of my friend”

04:02

Shakespeare props, Merchant of Venice, Jessica to Lorenzo: “do it secretly”

04:31

Shakespeare props, Twelfth Night, Malvolio’s letter: “By your leave, wax” (2019) (UH0225)

01:52

MITLibraries' Conservation Pictograms (2021)

03:42

A censored aerogramme letter from Tatsuo Ohashi 大橋達夫 to Shotaro Ohashi大橋勝太郎, Japan (c.1940s)(UH0101)

02:58

Letterlocking: Josephine Baker’s letter to Simone Dauthieu, Monaco (1971) (UH0229)

02:43

Document-locking: Fold + lock-O +adhere: A Bitcoin paper wallet, USA (2009) (UH0167)

02:23

A Folded Census Registration of the 金啓周 Kim Family, Busan, South Korea (March 1837) (UH0170)

01:48

Opera gossip, banned books discussed in an accessible-edge locked letter, France (1690s) (UH0081)

01:19

Fold & adhere: Isabella Stewart Gardner locked letter to Mrs Rockwell, USA(c.1886) (UH0092)

01:25

Hybrid-lock or fold and adhere: Isabella Stewart Gardner to Ms Sinkler, USA (1915) (UH0086)

01:34

A hybrid lock: Robert Kearsley Dawson’s Letter to William Conybeare, USA (1842) (UH0084)

01:08

An accessible edge hybrid-lock, John Keats’ letter to Fanny Brawne, England (1820) (UH0083)

02:08

Letterlocking: An accessible edge hybrid-lock, Lambelle, France (1808)

01:33

Letter from Cornelis Steijn to his mother on paper torn out of a blank book, Europe (1696)

13:58

Tomaso di Levrieri’s triangle locks & tuck-and-seal letters, Venice (1586–90) UH0004, UH0011, UH0106

00:55

Growing and flattening animation of unopened letter (Brienne Collection DB-2199) (UH0046)

04:22

Letterlocking Documentary: "What is Letterlocking?" (UH0067)

00:20

Letterlocking: Virtual unfolding, exploded view of letterpacket layers (Brienne Collection DB-1538)

01:34

What is letterlocking? USA, (2019) (UH0000) (LUV0252)