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Rozier's cypher and his plain copies

The letters supplied at the ends of lines 2, 5 and 7 rest on the key phase only

the code groups of both duplicates (NARA RG 59 M30 roll 9)

King's code key

The left half of the key strip

The 1917 Bureau reading in MID 9140-103 / 4131-44

Continental Congress diplomatic letters: cipher passages still undeciphered in 1956 (Wharton, Revolutionary Diplomatic Correspondence vols. 4-5)

The "Tampico message": Riverbank reports it cannot solve it, 1917

French consular dispatches in cipher to Talleyrand captured on the ship Astrea (the Gibraltar packet)

GC&CS Cryptographic Co-ordination and Records section: file of "Unsolved Problems", 1944

American Civil War letters, messages and cipher instructions, 1862-1865 (NSA historian's file)

Code messages found in the archives of the former German Embassy, Buenos Aires (report of 1945)

British naval officer asks the US for help in solving ciphers, 1915

Postal censorship and German espionage: codes and ciphers file, 1917

Letter of the Revolutionary War period in code, probably by a British officer, sent to MID for decipherment in 1934

German Legation telegrams, Central America 1940-41: Chargé Tripeloury (San José) ↔ Minister Reinebeck (Guatemala), La Paz → Berlin radiograms, Hava...

Code telegrams between the Mexican consul at San Antonio (Enrique D. Ruiz) and President Obregón, photostats 'not translated'

Code message carried by Henry Kolbeck and Olga de Visser from Mexico City to San Antonio, seized with its key at Laredo

Hermann Rueckheim (alias Rafael Gómez), Nuevo Laredo: code letters to Kurt Hinsch's sabotage network, and a Folke Cronholm letter in cipher

AEF G-2 Radio Intelligence Section: intercepted German messages and worksheets on the solution of enemy codes and ciphers, 1917-18

German, Japanese and French Legation code telegrams at La Paz, copied by informers for the US Legation, which the FBI could not decipher

Union Army cipher telegram books: press copies and registers of telegrams sent and received in cipher

Messages studied (by SIS) for a hidden or code message, 1937

Raphael Pino Roca → Primitivo Yella, coded message, 1942

Cipher forwarded to MI-8 by Major Mauborgne, 1917

Coded messages in German POW letters and the cipher system of German POWs in US camps, 1942-1945

Peruvian coded dispatch (1935) and coded message of the commander of the Peruvian submarine division

Intercepted Russian (Soviet) coded messages, 1931-1932

ONI A6-3 files: coded messages sent in by civilians and the Coast Guard for analysis, 1932-1941

ONI naval attaché reports filed as "Miscellaneous Code Messages" and "German/Italian Wireless Communications and Code Messages"

The "Gulick message" signed "Honytre", still unsolved at Riverbank in Oct 1917, and the cipher letter found on Thomas Gulick

Nauen wireless code message that MI-8 judged 'not in any German code known to us' and indecipherable

Document dug up near a post, believed to locate the James brothers' loot and signed 'Frank James': War Department cryptographers found no solution

Letter and map from 'Agent Pfeiffer' in signs taken for Slavic or Hungarian shorthand; MI-8 could not read them

Intercepted letters in code from the Panama Canal Zone, including one to D. V. Kracker, Bogotá, that MI-8 could not decipher

German agent messages: two deciphered and the 'Tismera' message being worked through an old German shorthand system

Austrian E. Kovacs, Valparaíso, to Buenos Aires: code messages (and Nunezant -> Morluk, Iquique), translation requested

Letter from 'German Mexico' to Sam Becer, Havana, 'in unknown code, may be a German spy letter'

Letter in cipher addressed to Cornelius K. Bettman, Barcelona, with a map thought to be of Havana harbour

Office of Censorship: secret submissions on intercepted letters with concealed messages, 1942-45

Bureau of the Mint → U.S. Mint Philadelphia: coded Western Union telegrams on coin shipments, 1912-44

Duisberg code messages: enclosure to an Office of Alien Property litigation case file

Cipher samples and translations submitted to the Chief Signal Officer, 1861-69

Letters written in cipher held by Carl Reissman, alien enemy detained (N. Illinois), 1917

Code messages of Dr. Otto Joseph (Transocean News Agency, Lima) examined by the FBI laboratory and not decoded, 'as cipher tables are not available'

Bolivian commercial cipher cable intercepted in New York, 1942

"Amateur sends in code to War Department", 1942

O. G. Roth, Cape Haïtien, to Elder G. G. Roth, New York: letter of 24 five-figure groups the postal censor could not decipher

Message concerning Mrs Anne Belmforth: 'seems to be a code, Cipher Bureau can do nothing with it'

Anonymous cipher postcard, Selfridge Field, Michigan: 'simple cryptogramic keys have not yielded results'

Luisa Castellanos, Matanzas, to R. V. Heredia, Venezuela: letter partly in code; MI-8 reported 'insufficient material to give coherent reading'

'Beatriz' (Arizona) to Manuel Loya, Mexico: suspected cipher letter that MIB called 'impossible to solve'

Letter in cypher from Leavenworth, Kansas, in the Jack Downing (Cherokee) file, 1916

six code groups (bog ×3, zeb, xob, zer, zog, bue ×2; zems = Ostia settled 23 Oct 2026)

Doubtful signs in the spelled words of R9634, R9645, R9646, R9656 (8/ϑ, ∂ s/p/t, ε l/g, the looped sign)

R9846 ff. 130v-132v beyond the crib third

The whole cipher text of ff. 371r-375v

R9653 second copy (f. 300v) and R9654 (ff. 301-302, same date)

R9660 decipherment (of this duplicate or of the first copy), if it survives

R9661-R9664 cipher text re-read (CSP 534, 540, 541, 544)

groups open in the sessa1524 key (vo, per, hay)

Gonzalo Fernandez de Cordoba, the Great Captain -> secretary Miguel Perez de Almazan, letter entirely in cipher

Gonzalo Fernandez de Cordoba, the Great Captain -> the Catholic Monarchs, military news (French troops concentrating at Canosa) with some paragraph...

Gonzalo Fernandez de Cordoba, the Great Captain -> the Catholic Monarchs, letter on the war in Calabria, mostly in cipher; undated

sender not stated -> the Catholic Monarchs

Lorenzo Suarez de Figueroa -> the Catholic Monarchs, letter in cipher, autograph signature

Lorenzo Suarez de Figueroa -> the Catholic Monarchs, letter in cipher

Juan Manuel, lord of Belmonte, ambassador -> the Catholic Monarchs, letter in cipher

Garci Lasso de la Vega, ambassador -> the Catholic Monarchs, letter in cipher, three folios

Garci Lasso de la Vega, ambassador -> Ferdinand the Catholic, letter in cipher

Lorenzo Suarez de Figueroa, ambassador -> the Catholic Monarchs, first news of the battle of Cerignola; the rest of the letter in cipher

Lorenzo Suarez de Figueroa, ambassador -> the Catholic Monarchs, letter in cipher

Lorenzo Suarez de Figueroa, ambassador -> the Catholic Monarchs, letter in cipher

Gonzalo Fernandez de Cordoba, viceroy of Naples -> recipient not stated, letter in cipher, autograph signature

Ferdinand the Catholic -> Francisco de Rojas, ambassador at Rome, bulls for the three churches of Santo Domingo; the rest of the letter in cipher

Lorenzo Suarez de Figueroa, ambassador -> Ferdinand the Catholic, letter in cipher

Iñigo de Cordoba and Dr Ponce -> Ferdinand the Catholic, letter in cipher

Lucas Russo -> Ferdinand the Catholic, news of the Great Captain; first half in cipher

Diego Ramirez de Villaescusa, bishop of Malaga -> secretary Miguel Perez de Almazan, letter in cipher, autograph signature

Pedro de Urrea -> Ferdinand the Catholic, letter in cipher

Pedro de Urrea, ambassador to the Empire -> Ferdinand the Catholic, letter in cipher

Fray Alonso de Burgos, bishop of Palencia -> the Catholic Monarchs, letter in cipher, even the date line, autograph signature

Prince Ferdinand (the future Ferdinand the Catholic) -> his father Juan II of Aragon, letter that turns into cipher partway; signed by the Prince

Ferdinand the Catholic -> his father Juan II of Aragon, letter entirely in cipher, signed by the King

Luis Despuig, Master of Montesa -> Juan II of Aragon and Ferdinand the Catholic, letter entirely in cipher

Lope de Conchillos -> secretary Miguel Perez de Almazan, curial business (the commandery of Torralba), some paragraphs in cipher

Lope de Conchillos -> secretary Juan Conchillos, letter in cipher, second half damaged by damp

sender not stated in the catalogue -> Ferdinand the Catholic, letter in cipher (sender not given)

Ramon de Cardona, viceroy of Naples -> recipient not stated, contemporary copy, mostly cipher, described as unintelligible

sender not stated (letter to a viceroy's circle; opens 'Recibi la carta de V.M. de los xiiij del pasado') -> Ferdinand the Catholic, original, most...

unsigned, unplaced (four letters) -> the Catholic Monarchs, four ciphered letters without signature, place or date

'Chapters carried by Gonzalo Amarillo' (memorandum) -> not stated, original in cipher; undated, leaves 8 November

Cipher fragments of letters, no sender, recipient, place or date -> not stated, pieces of letters in cipher, 21 folios

Bishop of Hirache -> secretary Miguel Perez de Almazan, letter on the payment of courier costs, part in cipher

unsigned letter in cipher -> not stated, letter in cipher without sender or recipient

Antonio de Fonseca -> the Catholic Monarchs, letter in cipher, now illegible from damp according to the catalogue

the whole despatch, Türkei I 37-2 ff. 1-8 (3-7 Sept 1578)

David Ungnad, imperial ambassador at Constantinople, to Maximilian II: a despatch wholly in cipher

Johann Joachim von Sinzendorff, Constantinople, to Rudolf II: despatch wholly in cipher

Ferenc Wesselényi (palatine) → unknown, two letters mostly in cipher, Sztrecsény and Murány 1663

HHStA Ungarische Akten, Verschwörerakten VII, Fasc. 327 "Chiffres 1664-1668" and Thököly 1682: ciphered letters without decipherment

French plenipotentiaries Longueville, d'Avaux and Servien → Marshal Turenne, intercepted letter partly in cipher

Frater Georg Martinuzzi → Ferdinand I, enclosing a letter in Geheimschrift to the Archbishop of Kalocsa

Emperor Ferdinand III → Field Marshal Holzapfel and General Traun, despatches 'in Chiffern ohne Klarschrift' (Thirty Years' War, last campaign)

Emperor ↔ Elector of Saxony, two letters 'in Chiffern (ohne Klarschrift)' around the Kötzschenbroda truce

Thirty Years' War Kriegsakten: partly ciphered reports and intercepts with no decipherment noted (Swedish confidant to Oxenstierna, Haussner, Ruisc...

French overtures to the Elector of Mainz (abbé Gravelle), enclosures in cipher; one ciphered letter has a clear twin

Prince Francis II Rákóczi → his envoy in Berlin Johann Michael Klement, ciphered instruction

Intercepted French cipher letters, Österreichische Geheime Staatsregistratur fasc. 17 pars 13

Charles V-era ciphers in HHStA Frankreich Varia: Chapuys → Hannart 1535-36, the Abbot of Luxeuil → Charles V 1546, French correspondence 1547

Austrian envoys → Georg Adam von Starhemberg (Paris), partly ciphered: Goess from Stockholm 1757, Mercy from St Petersburg 1761

Louis-Guillaume Otto, French ambassador in Vienna → Champagny, intercepted ciphered letter

Letters to the imperial ambassador in Madrid, Count Pötting, 'teilweise verschlüsselt' (Lamberg, Goess, Cardinal of Hesse, Balbases, Porcia, Empres...

Letters to the imperial ambassadors in Madrid, Counts Harrach and Trautson, 'teilweise verschlüsselt' (Caprara, Kramprich, Kaunitz, Auersperg and o...

Letters to the imperial envoys Grana and Mansfeld in Madrid, 'teilweise verschlüsselt'

Imperial-Spanish correspondence on Flanders, 'verschlüsselt': Archduke Leopold Wilhelm, Castel Rodrigo, Lisola

Mexican Empire correspondence of Archduke Maximilian with passages in Geheimschrift: General Almonte and Arrangoiz

Michael Starzer, Constantinople → Matthias / Hofkriegsrat, ciphered despatches 1611-20

Radibrati, Lustrier and others, Constantinople / Belgrade → Ferdinand II, ciphered despatches 1621-31

Johann Rudolf Schmid, Constantinople → Ferdinand II / III, ciphered despatches 1632-40

Schmid, Greiffenklau and Czernin, Constantinople → Ferdinand III (and his replies), ciphered despatches 1643-48

Hanns Hofmann → Lower Austrian government, German letter in cipher, key enclosed

Italian letter 'nicht entziffert' (Obizzi?)

'Einige chiffrierte Schreiben' filed with the Staatskanzlei cipher keys

Ciphered Italian correspondence in the Kabinettsarchiv and the Rome embassy archive: Koch → Prone 1753, Christiani → Koch 1755, Kaunitz → Firmian (...

Grand Duke Leopold of Tuscany, report on his stay in Vienna, with notes in Geheimschrift on Joseph II and his court

Ciphered letters of the correspondent Louitgarde Pauli-Bizonky from London (Foreign Ministry information bureau)

General Donzelot (Corfu) → General Andréossy, intercepted French cipher letter, with a partly ciphered covering letter of consul Roussel (Patras)

Barras → Rochambeau, Newport, letter partly in code, "not decoded"

Earl of Jersey → Earl of Manchester, Whitehall, part in cipher never printed

Copies of 66 "secret letters" of Charles I from the Isle of Wight, names in numerical cipher, with George Hopkins's petition

James Vernon → Earl of Manchester, Whitehall, paragraph in cipher (unprinted) on M. Lilienroot's project

Walter Titley, envoy at Copenhagen, diplomatic correspondence with several letters in cipher

Richard Hill, envoy to Savoy: copies of letters partly in cipher to "Mons. le duc Fengilea"

Giovanni Emo (Venetian, Paris) → Carlo Ruzzini at the Congress of Utrecht, letters partly in code

Pietro Grimani (Venetian ambassador, London) → Carlo Ruzzini at Utrecht, letters (code noted)

Joseph von Chlingensperg auf Berg, encrypted diary (1805)

Joseph von Chlingensperg auf Berg, encrypted diary (1825)

Earl of Sandwich → Earl of Carlingford, Madrid, two letters (cipher matched)

Charles II (in exile) → [Edward Proger], autograph letter (cipher matched)

Toussaint de Forbin-Janson, French ambassador in Poland → Cardinal César d'Estrées, Cracow (cipher matched)

Sarah, Duchess of Marlborough → [Lord Coningsby], letter (cipher matched)

William Blathwayt → George Stepney, three letters from Loo, Dieren and Dyrham (cipher matched)

Earl of Orrery → Earl of Danby, Bath, two letters (cipher matched)

Earl of Essex (Lord Lieutenant) → Viscount Latimer (Danby), Dublin Castle (cipher matched)

Arthur Mainwaring → Lord Coningsby, letter (cipher matched)

William Blathwayt → John Robinson (envoy in Sweden), four drafts and a copy (cipher matched)

Commonplace book (sermon notes, verse, a comedy) with several pages of shorthand and cipher

Cipher passages on the fly-leaf and inside J. Fairfax's "Exposison on the 75 Psalm"

William Stanton, "Cases and discourses controversial in matters divine", with passages in cipher

German recipe and charm book with several pages apparently in cipher

J. M. Morris → "Sister Hatty", Minersville, California, letter in a colour cipher

Latham & King, San Francisco → Carson Bank, enciphered telegram

Line ends lost in the binding shadow on p. 562

clear copies in BnF Cinq cents de Colbert 346

f. 102v line ends at the gutter (one or two signs a line)

the nine further letters of 1603 (fr. 3541 ff. 69-104): only Berger's summaries in the repository

Français 5190 nos. 171–172

fr. 16026 f. 99 and pp. 130-130bis (the targets) and the deciphered siblings f. 120, f. 126, p. 129

fr. 17020 ff. 134-139 (contemporary summary of fr. 16026)

A page and three lines explicitly omitted by the copyist

f. 370: read 23 Oct 2026; figures aligned with the copy (r2f). Line ends of f. 370v hidden in the binding gutter (about 147 copy letters, the copy is the only witness there)

The rest of the articles after f. 41v

f. 321 figure-level transcription

f. 168 decoded, not read (272 tokens)

f. 209 decoded, not read (123 tokens; v3 check 23 Oct 2026, 0.33 explicit holes)

start of each marginal gloss line on f. 60r

about 80 unread words of two or more signs (listed as `?` in reading.txt; worst lines t1.16, t1.22-26, t1.33, t1.38-39, t2.2-3, t2.10, t2.13-16, t2.19, t2.21, t2.39, t3.1, t3.5, t3.9)

letter 4 (fr. 4050): Biermann's figures not checked on an image

Français 5190 nos. 214–215, the cipher

The 6 Feb 1447 cipher original (copy f. 27)

f. 33 copy has no date line (date from a later margin note)

ital. 1583 f. 145 (1 Dec 1446) and the translation f. 131

Henri Clausse de Fleury to Villeroy, Soleure: ciphers marked 'non déchiffré' by Rott (BnF fr. 16026 f. 99 and pp. 130, 130bis)

Espagnol 318 nos. 92, 93, 94: Ferdinand's secretariat ciphers (Great Captain 1500, Suárez de Figueroa 1504, viceroy of Sicily 1503)

Louis Gonzaga, duke of Nevers to Robert de La Vieuville

Méliand's ciphered lines to Bouthillier (Arsenal 4540 f. 167) and the 1635 keys in Bellièvre's Italian embassy papers (BnF fr. 15913 ff. 1 ff.)

Letters to Francisco de Melo (Mazarin, Cardinal Orsini, Sousa Coutinho in Rome, secretary Pedro Vieira da Silva), with cipher letters of Orsini and...

Paiva Couceiro monarchist papers: letters in or partly in cipher (Taveira, Joaquim Pais), 1921, with a draft giving the cipher

Duarte Nunes da Costa → conde da Vidigueira (later marquês de Nisa), partly in cipher

Pero Mendes de Sampaio → conde da Vidigueira (later marquês de Nisa), partly in cipher

Unidentified writer → the Portuguese ambassador in Rome, partly in cipher (Italian)

Conde de Assumar's copy-book of letters from Barcelona to Portuguese ministers abroad (Vienna, Rome, London, The Hague), with cipher passages

Conde de Assumar's copy-book of letters to Portuguese ministers and others, Barcelona 1709-11, with cipher passages

Conde de Tarouca, Portuguese plenipotentiary at The Hague → conde de Assumar, letters with cipher passages (Quadruple Alliance, Gibraltar)

Visconde de Pindela → unidentified recipient, correspondence mostly in cipher on Braga politics and the Anglo-German loan

Conde de Burnay, 'Notas a Chirac': manuscript notes partly in cipher on 'L'Affaire D. Miguel' and the tobacco contract

Conde de Azevedo e Silva, Brussels → Ministry of Foreign Affairs, two telegrams in cipher

Telegram in cipher from St Petersburg to the Minister of Foreign Affairs, Lisbon

Charles Lefrançois → Henry Burnay, two telegrams, one in cipher

Banco Aliança managers → Henry Burnay, correspondence with ciphered telegrams (railways, Salamanca line)

Telegram in cipher from the Portuguese consulate in Cape Town to the Minister of Foreign Affairs

Manuel Câmara → José Luciano de Castro, telegram on political matters (in cipher)

João Batista da Silva Ferrão de Carvalho Martens → José Luciano de Castro, four telegrams mostly in cipher

D. Fernando Teles de Faro → Francisco de Melo, The Hague embassy: nine letters in cipher, 1658-59

Luís Álvares Ribeiro, embassy secretary at The Hague → Francisco de Melo: letters partly in cipher, 1659

Conde de Miranda, ambassador at The Hague → Francisco de Melo: letters partly in cipher, 1659-60

Marquês de Aguiar → António de Saldanha da Gama, despatch wholly in cipher

Marquês de Palmela → António de Saldanha da Gama, reserved despatch partly in cipher, forwarding Hyde de Neuville's letter

Nicolás de Piérola, supreme chief of Peru: letter-book of correspondence to various authorities, in cipher (62 pp.)

Patricio Lynch, commander of the Chilean occupation of Peru → President Domingo Santa María, telegram in cipher

Patricio Lynch → President Santa María, telegram in cipher with a copy attached

Patricio Lynch → President Santa María and → Minister of War Carlos Castellón: two telegrams in cipher of the same day

Jovino Novoa, Chilean plenipotentiary in Peru → President Santa María, telegram partly in cipher

Patricio Lynch and Jovino Novoa → President Santa María: two telegrams in cipher of the same day from Chorrillos

President Aníbal Pinto → Domingo Santa María at Antofagasta: two telegrams in cipher (one incomplete)

Villegas (Antofagasta) → President José Manuel Balmaceda: two telegrams in letter cipher, civil war of 1891

Claudio Vicuña Guerrero (Valparaíso) → President Balmaceda: four telegrams partly in cipher at the outbreak of the 1891 civil war

Admiral Oscar Viel (Valparaíso) → President Balmaceda: two telegrams in cipher on the 'insubordinados'

Jorge Huneeus → Domingo Santa María (then minister in the field at Antofagasta), telegram in cipher

'Marco' → Claudio Matte (Berlin): 22 telegrams partly in cipher on watching the property and persons of the Balmaceda administration

Allegorical code letter 'No. 1. La Estrella de la Banda Oriental y vos merse ambas se unen y ofrecen mutuamente servir a Sn. Miguel...', with its key

José Antonio Rodríguez Aldea → Bernardo O'Higgins, letter partly in cipher (6 ff.), with a printed 'Expreso al Virrey de Popayán'

José Manuel Balmaceda: autograph note written in cipher during the civil war

Luis José Orbegoso, president of North Peru → Andrés de Santa Cruz, Protector of the Peru-Bolivian Confederation: letter with information in cipher...

Unsigned telegram from Lima → José Manuel Balmaceda (Minister of the Interior / Foreign Affairs), in cipher, incomplete

Patricio Lynch → President Santa María, telegram in cipher, incomplete

Provincial telegrams partly in cipher to Balmaceda and the army secretary: Alejandro Morán (Rancagua) and Manuel J. Jarpa (Talca)

Antonio Huneeus Valdés (Paris) → Chilean government: telegram in cipher on the Upper Silesia plebiscite

siblings 1567-68 decoded word by word, no sentences (v3 check 23 Oct 2026)

sent original in TNA SP 70 (CSP For. ix 1821)

nos. 07 and 10 decoded, not read (v3 check 23 Oct 2026: 0.4; 0.345 by run)

another letter in the same code

the intercepts in this system

SP 95/136, every letter

SP 87/24/33 ff. 96-97, del Puerto 19 Mar 1748

Atterbury plot: cipher papers obtained by Shortiss; decipherers say 'cannot be decyphered without vast trouble'; 'Undecyphered paper'

Whitworth's Russia despatches, copies 'partly in undecoded cipher'

Sir Henry Wallop to Walsingham, cipher partly deciphered and partly obliterated

Bouille, governor of Martinique, to Sartine, letter 'partly deciphered'

"Letters not deciphered": Swedish and Spanish intercepts in the State Papers, 1748-55

Jacobite letters found on Blair and Maclean at arrest, partly in undecoded cipher (Sheridan, 'Burnet', Barclay)

Elizabeth Stuart, Queen of Bohemia, correspondence partly in cipher (Roe, Frederick V, Charles Louis, Gerbier)

Holland 1662 intercepts: about nine folios of 'Undecoded cipher', one a Spanish king to the Marques de la Fuente

Wolseley to Gordon, telegram in code annotated 'cipher unknown (Gordon unable to decipher it)'

SP 78/114: royalist cipher letters (Bamfylde, 'N.B.', six lines mostly cipher), Paris

Edward Nicholas to Sir L.R. at San Sebastian, in cipher

French letters entirely in cipher, SP 78/111 (Paris)

A Venetian secretary to the Venetian ambassador in England, 1625, in a three-figure syllabic code (SP 106/10 ff. 193-195)

Cornwallis ↔ Clinton cipher letters left undeciphered (Friedman's photostats and worksheets)

Rochambeau → La Luzerne, intercepted French cipher letter that New York could not decipher and sent to London

British cipher messages in the Clinton Papers left part-solved by Elizebeth Friedman (1952 worksheets)

William Eustis (Secretary of War) → Joel Barlow, letter in code on Henry Wilson's secret arms export from Ostend

William H. Seward → a correspondent in Copenhagen, copy of a coded letter

Intercepted letters between French diplomats and French ministers, 1780-1783 (60 items), Shelburne papers vol. 35

Henry Clinton's Gibraltar notebook (Notebook B), observations with some entries in cipher

Davis E. Castle, Signal Corps officer's journals with two coded passages

Intercepted letters between French diplomats and French ministers, 1767-1768 (24 items), Shelburne papers vol. 35

Funston, Scott, Pershing and the War Department, Punitive Expedition telegrams, some in code (some with plaintext drafts)

Peter H. Musty, diaries with personal names and two and a half months of entries in a numerical substitution code

Adam Ludewig, Alpena bookseller's clerk, diary with words in pigpen cipher

Jennie K. Thurston scrapbook, Stamford, with at least two items written in a cypher

Campbell Morfit → Henry M. Morfit, Hagerstown, letter in pigpen cypher, only partly translated by the father

Daniel Hewett, Waterbury stonecutter, pocket diary with six pages of an alphabetic substitution or transposition code

Henry Gibbs → Margaret Fitch, courtship letter no. 16 with passages in code

T. C. Connor journal, references to acquaintances in a pictographic code

John H. Tyler → Daniel H. London (Richmond fabric merchant), business letters using a code

Coleman Blach → Rosa Blach, love letters with a code for his clients

Sara E. Neal → Edward Brown Rogers, love letter with examples of coded text

the whole letter decoded, not read (3,152 tokens)

Unread, tentative and nonsense stretches, about 31% of non-null signs measured for sense (5 Oct 2026; p1.13 run, p1.24 "(fy)ve hundrid", p2.25 tail, p6.13-14, p3.14) (names p2.25 and p6.27, the code Ie, runs p1.13-15, 1.18, 1.24)

line 30 (last line, about 6 words, only "...am nonam" visible)

ff.37r-38r (decoded, not read since 23 Oct 2026), 199 unread tokens (f.37r ll.1-2, 7, 10, 22, 24; f.37v ll.1, 3; gaps in read lines) and 155 tokens valued by the crib fit on sense alone

the 88-word reading is Büchi's and cannot be checked sign by sign against the cipher

the key and sign inventory, never printed

Sir Nicholas Throckmorton (Paris) to Cecil, one of three letters, wholly in cypher and not explained

'Il Solito' / 'Pellegrino' letters to Cardinal de la Cueva's agent: leaks from Venetian ambassadors' despatches via the secretary of the Venetian I...

Henry Percy to Secretary Cecil

Bishop of Worcester to Cardinal Wolsey, Rome, 4 March 1526, Latin in cypher not deciphered

Bishop of Ross to Duke of Norfolk, a cypher not deciphered

Palm (London) to Starhemberg, German letter with ciphered passages, 1727

Marqués de la Fuente (Spanish ambassador in France) → Luis Ponce de León, Governor of Milan, original letters partly in cipher

Count Antonio Azzurini Conti → Cardinal Gualterio, holograph letters many in cipher (Faenza, Venice, London, Paris, Rome)

Marquis de Torcy (and Louis XIV) → Abbé de Pomponne, French ambassador at Venice, original despatches many in cipher

Nicholas Wotton to Queen Mary, 13 June 1554

Walsingham to Burghley, 25 June 1571 (letter-book; with Elizabeth to Walsingham, clear)

John Dodington, English Resident at Venice: letter-books with correspondence with the Doge, partly in cipher

Comte de Froulay, French ambassador at Venice: drafts of despatches with enclosures in cypher

Political correspondence from St Petersburg to Ogrodzki, 1765 and 1769-1770, part in cipher, with the key

Antoni Augustyn Deboli → King Stanisław August, cipher despatches from St Petersburg, 1783

Antoni Augustyn Deboli → King Stanisław August, cipher despatches from St Petersburg, 1784

Antoni Augustyn Deboli → King Stanisław August, cipher despatches from St Petersburg, 1785

Antoni Augustyn Deboli → King Stanisław August, cipher despatches from St Petersburg, 1786

Antoni Augustyn Deboli → King Stanisław August, cipher despatches from St Petersburg, 1787

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1780-1781, 1783-1785

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1782

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1786-1789

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1789

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1790-1792

Bernard Zabłocki → King Stanisław August, cipher despatches from Berlin, 1793-1794

Prince Jabłonowski at Berlin → Stanisław August, French political letters partly in cipher, 1791-1792

Polish minister plenipotentiary at Dresden → Stanisław August, cipher despatches, 1791

Hennig (Gdańsk) ↔ royal chancery, French letters partly in cipher, 1788-1792

A. Middleton, Polish legation secretary at The Hague → Stanisław August, letters partly in cipher, 1791-1794

Woyna at Vienna → Stanisław August, political correspondence with some cipher items, 1789-1792

Pokubiatto, Woyna and Corticelli at Vienna ↔ Stanisław August, secret correspondence partly in cipher, 1788-1792

Charles V -> Lope de Soria, 23 Oct 1535: mostly cipher, untranslated; after the Tunis campaign

Charles V -> Lope de Soria, 29 Jan 1536: almost entirely cipher, untranslated; talks with the Venetian ambassadors

Charles V -> Lope de Soria, 15 Nov 1524: army movements and 100,000 ducats; cipher parts untranslated

Charles V -> Lope de Soria, 14 Aug 1526 (?): entirely cipher, untranslated; date uncertain in the catalogue

Charles V -> Antonio de Leyva, governor of Milan, 7 Aug 1527: several cipher lines untranslated

Charles V -> Lope de Soria, ambassador at Venice, 30 Aug 1533: peace between the King of the Romans and the Turk; cipher part untranslated

Charles V -> Lope de Soria, 21 Mar 1537: almost entirely cipher, untranslated

Ferdinand, King of the Romans -> Lope de Soria, last day of Feb 1535: cipher part untranslated; one cipher line translated on p. 1

Ferdinand, King of the Romans -> Lope de Soria, 28 May 1535: examination of the prisoners Casal and Corsino; cipher passage untranslated

Ferdinand, King of the Romans -> Lope de Soria, 15 Jul 1535: Venetian intentions, Montalcone dispute; cipher part untranslated

Ferdinand, King of the Romans -> Lope de Soria, 12 Oct 1535: Turkish envoys, truce in Hungary; cipher part untranslated

Ferdinand, King of the Romans -> Lope de Soria, 26 Apr 1537: news of the Emperor and the war; cipher passage untranslated

Charles de Lannoy, viceroy of Naples -> Lope de Soria, 10 Sep 1523: much of the letter in a cipher the catalogue calls 'not deciphered'

Antonio de Leyva -> Lope de Soria, 11 Jul 1528: entirely cipher, untranslated

Count of Cifuentes -> Lope de Soria, 2 Nov 1533: marriage of the Pope's niece to the Duke of Orleans; cipher passage untranslated

Count of Cifuentes -> Lope de Soria, 19 Aug 1536: cipher passages, some untranslated, some translated in the margin; French army preparations

Ferdinand, King of the Romans -> Lope de Soria, 9 Apr 1535: cipher part untranslated (a separate translation sheet exists, 2 leaves)

Caulaincourt (Congress of Châtillon) → Napoleon: letters in cipher 'sans le déchiffrement' / 'le déchiffrement manque', filed beside deciphered sis...

Danish diplomatic ciphers intercepted by Napoleon's services, 'non déchiffrée': Bernstorff → Russian ambassador 1807; Rosenkrantz (Copenhagen) ↔ Ey...

French consuls at St Petersburg and Moscow → secretary of state for the Navy: cipher passages left 'non déchiffrés' / 'non transcrits' (Lavie 1720,...

Lettres chiffrées (B-V) and cipher of Mme de Mornay's correspondence with Mme du Bourget

Lettre chiffrée écrite en 1816 au général Jacquemard (police dossier, 9 pièces)

Perruchon: correspondance tronquée et en partie chiffrée

Papiers du général Biron; lettres chiffrées

Partyet, French consul at Cadiz → Conseil de Marine: '[suite en chiffre, non transcrite]'

Partly ciphered letters in the AN autograph collections: Greffier → marquis de Rambouillet 1615; Foullé de Martangis (Copenhagen) → Feuquières (Sto...

Lagny → Martin, chief of the Pondicherry factory: commercial instructions partly in cipher (register copy)

Marquis de Villeneuve, French ambassador at Constantinople → Maurepas: letter 'non déchiffrée' and a partly ciphered letter 'non transcrite'

Saint-Marsan (French minister in Berlin) → Maret, despatch 'non déchiffrée'

Marquis de Châteauneuf, ambassador at Constantinople → Louis XIV and Pontchartrain: 'la partie chiffrée n'est pas déchiffrée'

Royalist émigré correspondence of the abbé André: 'lettres chiffrées (1799)'

Jean de La Fin, sieur de Beauvoir-La-Nocle → the duke of Bouillon, letter partly ciphered

French consul at Algiers → minister: 'document non décrypté pour la partie chiffrée' (f. 119-132)

States General parallel set NA 1.01.02 inv. 12588.120–125

R1040 first part, 2,259 groups (images 5453-5458, 5459 groups 1-179, and 5474)

NA 1.01.02 inv. 12579.26, every cipher note

the whole letter's reading

States General: "diverse briefjes in cijferschrift" from the Spanish invasion of the Veluwe

Johan Boreel, London, to the States General: 6 letters in cipher, with duplicates 'without cipher'

HK TNI order on general mobilisation and guerrilla units, with a coded message

Soerjotjondro (Batavia) → telegraphic address 'Epidnation', Singapore: code telegrams, not decoded

Penilik Djawa Timoer: coded telegram on sabotage of the Malang transmitter, with a Poesat Badan Pengawas Oemoem report

Documents captured by the KNIL at Bandjermasin with intelligence information partly in code

Van Beuningen embassy, Copenhagen, to the States General: 29 letters partly in cipher

Nanningh Kaiser, Copenhagen, to the States General: 6 letters partly in cipher

Schaep and Rumpf, Stockholm, to the States General: letters partly in cipher

Coenraad van Beuningen, Westminster, to the States General: letters mostly in cipher, with enclosures

Slingelandt and Van Wijngaerden embassies, Copenhagen, to the States General: letters partly in cipher

Dutch embassy at Paris (1657) and Wassenaar Starrenburg (1686) to the States General: letters partly in cipher

Bernardino de Mendoza (Paris) -> Alexander Farnese: three letters entirely in cipher, 'non dechiffrees'

Philip II (Pardo) -> Alexander Farnese: entirely in cipher, 'sans dechiffre'

Philip II -> Alexander Farnese: two long letters in cipher, 'sans dechiffre', in triplicate

Philip II -> Cardinal Granvelle: original entirely in cipher, 'sans dechiffre'

Jean-Baptiste de Tassis -> Alexander Farnese, and Farnese's reply: very long letter and answer, entirely in cipher, 'sans dechiffre'; plus cipher m...

Alexander Farnese -> Cardinal Alessandro Farnese: three ciphered letters whose decipherment is lost

Mazio (Paris) -> Alexander Farnese: bundle of billets entirely in cipher, 'sans dechiffre'

Adonio Salvi (Spa) -> Alexander Farnese: ciphered letters, 'non dechiffrees'

Octavio Farnese -> Ardinghello, his agent in Spain: ciphered letters, 'sans dechiffre'

Margaret of Parma, undated apology 'Bel modo di procedere che ha tenuto...' (copy): 8-page copy with some cipher groups not deciphered

Alexander Farnese -> his father Octavio Farnese: several letters in cipher, 'sans dechiffre', on the Netherlands war and the Claudio Landi plot

Secretary Garnier -> Alexander Farnese: bundle of letters entirely in cipher, 'sans dechiffre'

Pietro Aldobrandino (Lisbon) -> Margaret of Parma: ciphered letters, decipherment missing; apparently on Margaret's rivalry with her son for the Ne...

Philip II -> Margaret of Parma: several ciphered letters, decipherment often missing

Juan Yniguez (Rouen) -> Alexander Farnese: letters entirely in cipher (inventory does not say whether deciphered)

Oswaldo Aranha → Flores da Cunha, cipher telegram with the cipher keys attached

Lindolfo Collor papers: 21 cipher telegrams on the eve of the Constitutionalist Revolution

Lindolfo Collor papers: cipher telegrams from Borges de Medeiros, Vargas and Aranha, 1927-30

Raul Soares papers: cipher and code telegrams of the Minas Gerais leadership (Bernardes, João Luís Alves, Aurelino Leal)

Pedro Ernesto papers: coded telegrams of the 1930 revolutionary conspiracy (João Alberto, Estillac Leal, Luzardo)

Oswaldo Aranha papers: 354 cipher telegrams without translation, 1930 revolution

Oswaldo Aranha papers: 16 cipher telegrams without translation, Liberal Alliance campaign

Oswaldo Aranha papers: 12 cipher documents, 1933-38

Flores da Cunha papers: 32 cipher telegrams, 1927-37

João Francisco papers: cipher telegrams from Borges de Medeiros and Júlio de Castilhos (1898-1907) and Vargas (1932)

1930 revolution dossiers with cipher correspondence (AD dossier, Cristiano Machado, Aranha to Santo Ângelo)

Virgílio de Melo Franco papers: intercepted cipher radio messages

Württemberg estates (Landschaft) ↔ their envoys in Vienna, ciphered diaries and reports (the estates' suit against Duke Karl Eugen)

Rudolf von Ehingen, Jakob Ramminger and envoys → the Austrian regiment in Württemberg, Peasants' War letters 'in Chiffren'

Intercepta of Margrave Ludwig Wilhelm of Baden: French letters of Chamillart, Marsin and Tallard 'chiffriert'

Commandeur de Maisonneuve → Count Johann Karl von Zeppelin, partly ciphered letters, with key

Baden-Durlach envoy at the Reichstag, reports partly ciphered (Seven Years' War)

Archduchess Claudia de' Medici → Margrave Wilhelm of Baden-Baden, money for Breisach, partly in Geheimschrift

Prince Wilhelm Friedrich of Hohenlohe-Neuenstein, letters partly encrypted about his marriage plan with a Countess Welz

Maria Walburga Eusebia von Waldburg, provost of Essen, → her brother Truchsess Christoph Karl, partly in Geheimschrift

Ferdinand III and Archduke Leopold Wilhelm → Field Marshal Melchior von Hatzfeldt, orders and reports partly in Geheimschrift

Lic. Melchior (Vienna, Prague, Strasbourg) and the envoys Pape and Köhler → Count Wolfgang Julius of Hohenlohe, partly ciphered reports with key

Philipp Eberhard of Löwenstein-Wertheim-Rochefort → his brother Prince Maximilian Karl, with a key to a Geheimschrift

S2 name after "Johann" (11 tokens, read "ohrspacbuet", plus the lone n after [513])

first page of the 26 February letter, subscription of the 15/25 February letter, rest of the third letter

Year and sender

J.A. Meyerfeldt, governor-general of Swedish Pomerania → the King: "several in cipher"

Mauritz Vellingk, former governor-general of Bremen-Verden, reports from Hamburg, partly in cipher

Johan Casimir (Count Palatine) → Gustav II Adolf: own-hand report on the finance administration, partly ciphered

Swedish envoy in St Petersburg: apostilles in cipher to the King

Letters in cipher, unsigned, to Count Adolf Göran Mörner

Crusenstolpe papers: spy reports and cipher documents on the 1809 revolution

Charles XI's full power for the Swedish commissioners (Nijmegen), partly in cipher

President Floriano Peixoto → Assis Brasil, minister in Buenos Aires, cipher telegrams (Federalist war and naval revolt)

Rio Branco → Assis Brasil, cipher telegrams (Zeballos crisis)

1923 Libertador revolution: coded telegrams between Alipio Teixeira, Carlos Noedo, 'Malakoff' and 'Arc'

Foreign and Navy ministers (Cassiano do Nascimento) → Assis Brasil, cipher telegrams

Victorino Monteiro (Montevideo) → Assis Brasil, cipher telegrams

General Costallat, Manoel Vieira, Fernando Araripe → Assis Brasil, cipher telegrams

Assis Brasil → the President, cipher telegrams from Buenos Aires

Flores da Cunha papers (NUPERGS): cipher telegrams from Borges de Medeiros, Vargas, Aranha, Sinval Saldanha, Gen. Pessoa

Raul Pilla papers (NUPERGS): cipher letters and telegrams of the Frente Única exiles

'Conceição', Brasil Viana, Santos → Anacleto Firpo and Urbano Garcia, cipher and code messages from Artigas (1924 rising)

Eric Sams's decipherment (1976)

Hyde: instructions for his secretary Edgeman (mission to Scotland), plus two further copies by Edgeman mostly in the King's cipher and in Nicholas'...

Wallis's four undeciphered 'challenge' letters at the end of his cipher book (Brasset → Bordeaux-Neufville 1653; Buckingham; Townesend 1658; unknow...

Mordaunt / Luttrell and others → Ormond, Restoration-year cipher letters in the Carte papers

Captain Thomas Ogle and Sir John Digby → Thomas Devenish, code letters (one a code repeat of the other)

Nairne collection: several ciphers among the papers (fols. 3, 10v, 21, 25)

Hyde to Lord Rochester on the King's impending departure from Paris: part in undeciphered cipher

Unidentified sender → Robert Fleming, three letters partly in cypher (Rotterdam)

W. P. → William Blathwayt, letter part in cypher on the Franco-Spanish arbitration

Francis Drake (British minister at Munich) → Charles Stuart, partly in cipher, three pages partly obscured

Louis Billouart de Kerlerec, governor of French Louisiana → Machault d'Arnouville (Minister of Marine), despatch in cipher (intercepted)

Louis Billouart de Kerlerec → unidentified recipient, letter in cipher and copy, enclosed by Governor Lyttelton to Loudoun

Hans Kaspar von Bothmer and Hanoverian agents → Jean de Robethon: dispatches on the Hanoverian succession, some ciphered

East India Company Committee of Secrecy: letters and documents in cipher on a proposed Anglo-Philippine expedition

Joseph Hooker, Army of the Potomac: ciphered telegrams on crossing the lower Potomac

Henry E. Huntington ↔ Collis P. Huntington: business letters and telegrams often in code (Southern Pacific / executive cipher books)

Joseph Cleary's gold-rush voyage journal: a line of monoalphabetic cipher, key on the back blank page, not deciphered

Henry Blake Fuller → Louise Lawrence Venus Washburn: a letter fragment written in code

Any further cipher pieces among the ~1,532 paper documents that Puig did not print, and those not returned after 1920–30

The key applies to the other nine letters of Benedict of 1399–1403 (it was built by Puig from Climent's lines on three of them), but their ciphertext is not imaged anywhere

The ciphertext itself (no image, not transcribed)

The ciphertext itself (no image, not transcribed)

The ciphertext itself (no image, not transcribed)

The rest of the letter (doc. 1043), which Puig cites but does not print

The ciphertext itself (no image, not transcribed)

The cipher line of 4 Dec 1398

Nicodemo Tranchedini → Francesco Sforza, Rome despatches with cipher (Ambrosiana pergamene)

Ottone del Carretto → Francesco Sforza, Rome despatches with cipher words left unexplained (Ambrosiana pergamene)

Stefano Nardini, archbishop of Milan → Francesco Sforza, despatches with cipher passages

Francesco Sforza → Alberico Maletta, cipher polizza enclosed in letters (pope, Nicodemo, King of Aragon)

Council of Trent miscellany: "lettere cifrate" (incl. one on precedence for the Count of Luna)

Papal Secretary of State → Alessandro Bichi, nuncio in France, cipher letter intercepted by the governor of Lyon

Secretariat of State → nuncio in Florence, cipher letters, and a ciphered fragment

"Theorica in lapide philosophico" (Mare magnum), Italian alchemical treatise written in secret script, with its key

Dietrich von Schönberg ↔ Grand Master Albrecht of Prussia, letters 'in Chiffern' (Moscow mission, Reiterkrieg recruiting, France)

Elector Joachim I of Brandenburg ↔ Grand Master Albrecht, ciphered letters on help against Poland

Prussian envoy Karl von Stein at Mainz: ciphered letters with Böhmer, Esebeck, Hertzberg, Bischoffwerder, reskripte, and Stein → Lucchesini

Karl Wilhelm Saegert, Karl von Usedom and General von Wedell, encrypted letters (Wedell-Usedom mission, Crimean War, the "Usedom affair")

Dietrich von Schönberg ↔ Daniel Gundelfinger at Lyon, letters in cipher on the French negotiations and the Reichstag

Friedrich von Heydeck, Wilhelm von Isenburg and Wolf von Schönburg → Grand Master Albrecht, field reports in cipher (war with Poland)

Napoleonic-era Prussian cipher pieces: Frederick William III → Werther in Vienna (3 ciphered letters 1809-10); intercepted ciphered dispatch of the...

Other ciphered pieces in the Ordensbriefarchiv: Scultetus 1505 (key enclosed), Eltz 1514, Gablenz/Miltitz 1515, Witmansdorf 1519, Hutten/von der Th...

element values carried by one decipherment only (357 Schomberg, 581 Card. Richelieu, 197, 844 Gostavo, 930/957 Mons.r Nuntio ...)

Rome's decipherments of these ciphers (ASV Segr. Stato Francia 27, cited by Hübner 1870)

missing leaves (R46 between 382v and 383r, R47 after 385v; R17 233v and R22's last leaf not imaged)

item 22/29

11 nomenclator groups seen once in letters that read (1200, 1335, 1960, 1985 in 423/2; 1232, 1469, 1698, 1942 in 423/7; 1636 in 423/8)

the minutes of these letters (Archivio della Nunziatura di Madrid)

the year of the letter and the writer "Clementino"

Manassès de Feuquières → baron de Rorté on German affairs, six letters largely ciphered

Signeul (Bernadotte's agent) correspondence with Count Engestrom and Löwenhielm, ciphered

Henri III → Bellièvre and Villeroy on Portuguese affairs, partly ciphered original

Blatier (agent in Flanders) → Henri III and Crosne, three letters largely ciphered

Letter on the Saluces affair (Henri IV's negotiations), Grenoble, with a ciphered passage

Maréchal de La Châtre → Villeroy on the Jülich expedition, partly ciphered

Jeannin → Villeroy on the negotiations with the princes (Loudun), c. 10 partly ciphered letters

The 1761 key itself, COL B 113/114, MAR/G/178

The minister's ciphered minutes (C8 A 77 ff. 31, 43) and MAR/G/178 (colonial Navy keys 1741-1776)

Cayenne governor → Navy minister, four letters 'chiffrée en entier' and further ciphered passages not translated (Guiana, War of the Austrian Succe...

Cayenne letter 'entièrement chiffrée' (troops, munitions, medicine lacking) and receipt of a ciphered ministerial despatch of 2 Dec 1747

Brazza's mission papers: ciphered correspondence with the Foreign Ministry and the letter revealing the cipher

Governor Lavaud's despatches from Tahiti: 'Dépêches chiffrées (1847-1850) avec table des matières'

Cipher telegram in the papers of Aparicio Saravia, leader of the Nationalist (Blanco) revolutions of 1897 and 1904

Ministerio de Gobierno, orden público: municipal and departmental despatches to the Minister, most in cipher, a few with their translation

Ministerio de Gobierno, orden público by department: telegrams in cipher from the alcaldía of Cúcuta on the hunt for General Régulo Olivares

Ministerio de Gobierno, private secretariat: confidential reports on foreign communists and forged banknotes, with some cipher telegrams

Colombian ambassador in Lima (Carlos Echeverri Cortés) → Foreign Minister Eduardo Zuleta Ángel: cipher cables on APRA, the Odría coup and the Haya...

Colombian telegraph administration: copies of international telegrams (Guayaquil, Lima, London, New York, Rome, Barcelona, Manchester, Mexico ...)...

'Relations en chiffre du Ministre de Prusse', Saxon cabinet file (Prussian envoy's ciphered reports)

Peter Knorre and Rudolf Schenk von Tautenburg → Duke Wilhelm III of Saxony, reports 'vollständig' or 'größtenteils chiffriert' (Luxembourg successi...

Wittenberger Archiv, 15th-century cipher pieces not in the Knorre row: embassy paper 'unverständlich, da das Wesentliche in Chiffren', Brussels new...

August III → Duke Johann Adolf II of Saxe-Weissenfels on the siege of Danzig, with encrypted reports

Saxon contingent of the Reichsarmee, 'Inserate in Chiffre' with the reports to the Elector

Jesuit Father Breinl, ciphered dispatch from Rome to Electoral Princess Maria Antonia

American Revolutionary syllabary (code) letters in three categories 'which cannot be solved by any of the systems in present archives'

Cipher texts painted on a Winterhalter canvas (French Second Empire), never deciphered

'Burdick ciphers': cipher evidence of the German-Mexican conspiracy, World War I

Symbol cipher sent to the Army Signal Corps with a challenge to 'anyone in the world' to solve it

'Historic code message' on Nelson's Trafalgar signal: a Navy cryptanalyst's challenge to Friedman

George, Lord Digby → Prince Rupert (or Maurice), Oxford, catalogued as a cryptogram

Goodricke family of Ribston Hall papers: one letter partly in cipher

Mary Smith's culinary and medicinal recipe book, catalogued "Ciphers (codes)"

Hawarden sessions orders on former end-leaves of Dalton's Countrey Justice: one note in cipher (leaf 1r)

further traffic or a deciphered copy in HStAM 118 a Nr. 1973 (Feldzug 1744 Bd. 1) and Nr. 1969-1972, 2044, 2047

Landgrave Philip of Hesse ↔ King John Zápolya, Hieronymus Łaski, Nickel von Minckwitz and Lodovico Gritti, with cipher key and translations

Military news for Prince Carl August Friedrich of Waldeck, in a three-digit code

Politisches Archiv Landgraf Philipp: ciphered pieces (Eck letters 'Briefwechsel in Chiffern' 1532, Sickingen intercept 1522, Wilhelm IV-Moritz-Reck...

6 Sept 1655, the secret-script passages

the 4th letter of CmCasda (a, read as a by the printed decipherment, m by the table)

clear letter under the R922 sheet (fascicle p. 350)

Grade-C corrections (12) rest on context, not on the image

Nulls, compound segmentation and editorial emendations

the cipher behind paragraphs 1-4 of the memorandum

Siena, "Lettere in cifra" of the Concistoro: the pieces still unsolved (nos. 4, 7, 14, 15, 19, 21; no. 1 of 1421 unphotographed)

Three letters wholly in cipher to Gasparo Spinelli, Venetian resident at Naples, during the Osuna crisis

Senate ducali in cipher to Giovanni Battista Lionello, Venetian resident with the Swiss

A 'replica' wholly in cipher among letters from other Venetian ambassadors to Francesco Corner, ambassador in England

Père Hacki (Jesuit agent in Poland) → Queen Christina of Sweden, c. 18 ciphered letters on the Polish election

Archbishop of Corinth (nuncio) → Queen Christina of Sweden, two ciphered despatches on Polish affairs

Queen Christina of Sweden (Rome) → marquis del Monte and Texeira, four partly ciphered letters

Charles V to Lope Hurtado de Mendoza, Regensburg, partly in code

Chancellor A. P. Bestuzhev-Riumin, two documents written in cipher (the 1742 one also signed by M. I. Vorontsov)

Achille Bazaine to Comte Harispe, Miranda de Ebro, letter partly in cipher (First Carlist War)

R1954 (March 1756, 1,621 groups): decoded, not read

Robert Fagel (1771-1856) (The Hague) to Prince William V, (1746-1805)

Comte d'Affry (The Hague) to the Marquis de Stainville (Choiseul), ambassador at Vienna, intercepted code letter

Margrave Ludwig Wilhelm of Baden (Türkenlouis) → Count Hermann Otto of Limburg-Styrum, letters partly in cipher

Velen and Limburg-Styrum papers (Gemen): Steckenberg → Alexander von Velen 1645, Fürstenberg 1662-74 'chiffriert', anonymous Paris letters 1695-97...

Münster envoy Dietrich von Plettenberg at the Regensburg Reichstag and the Nuremberg princes' congress, correspondence partly encrypted

Aaron Burr, autograph letter 'largely in cypher' to James Wilkinson (Newberry copy), with Wilkinson's explanation of the cypher filed separately

Charles Williamson papers: document written in code (content unknown), ca. 1805

Apuntes informes sobre Filipinas: reading notes with sections 'in shorthand or code' and a tipped-in folded leaf in code

Chevalier Lagau → comte de La Marck: intercepted French cipher letters

Else Iversdatter Vandal → her husband Morten Madsen Lime: a letter in cipher

Danish Foreign Ministry: incoming cipher and code telegrams

the whole letter (kart. 6, inv. č. 68)

R4645: a leaf between P2 ("quae ergo") and P6

Ferdinand, King of Hungary and Bohemia (future Ferdinand III), to Maximilian von Trauttmansdorff, letter in cipher

Torcy 3 Apr 1710, cipher part (f.38v-41r, 690 groups)

the originals as received (Archives diplomatiques, Correspondance politique, Gênes)

R1137 Cistarelli, 584 two-digit groups

V1908 (14 Oct 1520), line 7 and about six cipher lines at the foot

the 1816-19 Cifra della Segreteria di Stato codebook

For catalogue 583: the Bourbon government's side: the Vienna legation's correspondence 1860-1862 (Petrulla) and the cipher collections

Clement VII → Charles V, points on which the Pope wished the Emperor to oblige him (League, negotiations with France), part in cipher

José de Viana y Eguiluz (Vienna) → Marqués de la Paz, ciphered despatches on the Treaty of Seville crisis

N.73 (751): about 26 numbers unresolved

look-alike readings 3.09% of letters, five over the 3% limit (`sin`/`sim` minims, `X` = r/s/z outside ll. 9-31)

R9319, a dot-by-dot transcription aligned with Leighton's text

Ewald Spöker → Josef Riklin, letters with encrypted information for the exile Josef Panholzer

Condé correspondence with de Pradt, Preissac, Roll, Saint-Simon, Vernègues and the Salon français: letters ciphered as musical scores

Cardinal Mazarin → Jean Talon, three ciphered letters from La Fère

William Eustis (Secretary of War) → Gen. James Wilkinson, routine letter with part of the message in cypher

Fragment of a reported conversation avowing allegiance to the U.S. rather than Britain, 'contains numerical cypher notations'

B/C/D: several groups at the right margin run into the binding (70?, 5?, 50?, 9?, 112?, 36?, 124?, 6?, 74?)

Letter 1 p. 74 l. 3: group 75? (last digit lost in the binding; 751, a null, fits the stroke) and the 283 (r) before it, "consument avec r.. même bonne discipline"

a photograph of HT 34 line 3

readings of the 5 totals that cannot be reconciled in any window (HT13, HT25b, HT102, HT122b, PH(?)31a)

Adrian Wilhelm von Virmond ↔ Count Palatine Philipp Wilhelm of Neuburg, correspondence partly encrypted; 18 code keys in the same papers

Elector Joachim Friedrich of Brandenburg, postscript of a partly ciphered letter on Reich affairs, Jülich-Berg files with Chiffrenschlüssel of the...

Johann Christoph von Urbich papers: letters partly encrypted on Palatine neutrality 1692-93 and to Chancellor Reventlow about Patkul 1701-03, with...

Wilhelm Christian von dem Bussche on Hesse-Darmstadt's secret mission in Berlin ↔ Major von Pappenheim, encrypted letters with the cipher

Rozier no. 1 (6 Brumaire VII) and no. 2 (2 Frimaire VII, with postscript and Hédouville extract), the ciphertext

rem88 seven groups with lost digits (142x, 21x, 15xx, 11xx, 10xx, 55x, 13xx)

C09122909900 pair 2 (17 for イ)

V4B (容密, 265 groups): only 4 of its 22 sheets re-read blind; framing repairs in V4B, V4D, V4E still to be checked on the scans

Dr Ulrich Zasius (imperial vice-chancellor) correspondence with Nuremberg, partly encrypted letters

Nuremberg envoys (Pömer, Löffelholz, Herpfer, Ölhafen) at the Ulm, Heilbronn and Frankfurt conventions and the Pirna/Prague talks, reports partly e...

George Digby to William Legge, explanations of defeat (coded part not deciphered)

Prince Rupert to unknown, in code (not deciphered)

Sisson documents: memoranda on translations and code messages found with the documents (Samuel N. Harper Papers)

Leadbeater affair: copy of a 'cipher' note with correspondence from the mother of the fourth boy (Helen I. Dennis Collection on the Theosophical So...

Defence censorship: Mr Stiver, use of a secret code

Marie Becker née Maurer, a letter in Geheimschrift

Telegram in cypher from London to the Governor-General of Australia, left untranslated

Telegrams in code from James Robert Dickson to Major-General Howell Gunter, Australian Club, Sydney

Robert de Boissiran, correspondance (dont plusieurs lettres chiffrées)

Juarez and Fernando Távora → Major Alfredo de Simas Enéas Junior, letters in code (tenentista conspiracy, 1924 revolution and exile)

Lettres du duc de Choiseul à M. Kau, en partie chiffrées

A key or duplicate in the Lorraine ducal archive (Archives départementales de Meurthe-et-Moselle)

Letter from Rome to the abbé Bossuet, partly in cipher, unsigned

Armand du Lau du Chambon's papers: ciphered correspondence of Louis II de Bourbon, prince de Condé (Fronde)

the same four: stretches where the homophones do not segment and the 1616-px greyscale scans do not settle the doubtful figures (struck, overwritten)

Dispatches seized from Hugues Delaval at Châlons, with their nomenclator for "Monsieur le Bailly Nérole" (Archives municipales de Châlons-en-Champa...

S5 "eisen o vi rechte" (14 tokens), "o ?" before "ein guten" (2), the stray e in "sobaldt e ich" (1)

Pandolfo Malatesta, archbishop of Patras, to Gianfrancesco Gonzaga

Giovanni Rizzardo (Venetian secretary, London) to the Inquisitori di Stato, ciphered despatches with cipher keys, loose in Melzi's Marescalchi rosso

José María Calderón, royalist and then Iturbide-era commander: "oficios en clave" on royalist and insurgent troop movements

German soldier's notebook, partly written in code (captured WWI document)

ff.35v-36v, 316 tokens (f.35v ll.3-6, 10-11, 15, 20; f.36r ll.4, 6, 8-11, 14-16; f.36v ll.2-3, 5-6, and gaps in the read lines)

Antonio Mazzucotelli, parish priest of Gorle: notebook with four pages in a cipher alphabet

Marquis de L'Hospital (French envoy, Naples) → maréchal de Richelieu, seven partly ciphered letters

The Emperor Charles V to the Abbot of Najera: almost entirely in cipher, torn, scarcely half legible, no deciphering appended

Robert Walpole (Paris) → Sir John Goodricke (Stockholm), 5-page letter on Franco-British relations and the Corsica affair, with part of the letter...

Simcoe papers: cipher letters relating to North America

Averardo de' Medici and Piero Guicciardini, Faenza, to the Dieci di Balìa: the letter Albizzi's office could not read

Philip IV: real cédula in cipher to Íñigo Melchor Fernández de Velasco, VII duque de Frías

Viceroys of Valencia and Catalonia and the governor of Vinaròs → Diego de Brizuela, cipher letters during the siege of Tortosa

Letters to the von Pelden genannt Cloudt family, partly ciphered

Magonista letters intercepted at St. Louis: consul's transcriptions, some in cipher "no se encuentran descifradas", with a sibling file of decipher...

Nassau agents in Paris (G. H. Fabricius, Hans Christoph von Gagern) → Nassau government, reports on the indemnities, occasionally in a number code

For catalogue 566: selected images of the ciphered letters (15 scans)

For catalogue 640: Poinsett's Buenos Aires reports of 10 May, 25 Jul and 30 Jul 1811 marked 'part(s) in cipher'

Japanese Consul-General in Australia: messages in code (seized consulate papers)

Swedish General Staff: Russian and English telegrams of WWI in clear and code (intercepts)

Gottorp ciphered correspondence not in catalogue #530: Duke Christian Albrecht's own drafts partly in Geheimschrift (Ulcken mission to London 1675-...

Theodor Körner (Carlsbad) → his father Christian Gottfried Körner, 'verschlüsselter Brief aus den Freiheitskriegen'

John Graham → James Madison, Burr conspiracy reports in State Department code, partly read

Lodewijk van Toulon (1767-1840) (The Hague) to Dirk van Hogendorp (1761-1822), ambassador of the Batavian Re[ublic in Russia

An interlinear or marginal gloss on the sent letter or on Ormond's retained copy

Riverbank Laboratories 'Mexican codes' and unsorted cryptographic papers (the surviving Riverbank Department of Ciphers files)

Sebastian Freitag (Brandenburg naval councillor) in Berlin → Emden burgomaster Djurko Andree, partly ciphered

Danish envoys Paul von Klingenberg and Wilhelm Heespen, relations on the Bremen and Rotenburg conferences, with Geheimschriften

Swedish war commissary Alexander Erskein's papers: Karl Gustav Wrangel's letters and number-code messages from the theatres of war

Philip IV → VII duque del Infantado (ambassador in Rome): two identical letters, partly in cipher

Code telegrams not understood (2nd Military District, Sydney)

Secretaría de Gobernación political-police cipher telegrams (DGIPS), elections, Cristero-era arrests of priests, sedition

Mercy-Argenteau (French minister in Munich) → Maret, duke of Bassano, report with cipher passages

Esterházy papers, box 636: six cipher letters with no plaintext, one from Maria Theresa

the six box-636 documents (only 176 groups of one shown in print)

Brandenburg-Kulmbach privy secretary Kaspar Dobenecker, ciphered correspondence on Aldringen, Breitenfeld and the Frankfurt Deputationstag

For catalogue 526: the Bremen Council's ciphered letters of the 1547 siege (6 items), the archive the Ranke leaf came from

Würzburg ↔ Dr Nikolaus Anton Seiz in Rome, partly encrypted letters, with a large cipher table (Seiz-Plettenberg 1737)

Philip IV → the marquis of Velada, ambassador extraordinary in England: two short cipher runs

Robert Fleming, Melbourne: secret communications in code (censor case)

Serrano, Correspondencia diplomatica ... Pio V (1914): not checked

Puig's printed text of the ten letters, not in the repository

Burgo → Gattinara letter, Ferrara, 26 Oct 1527

the minute's year and the specific Fugger asiento

re-transcription

22 Oct 1529 opening (fr. 3005 ff. 165r-166r): read in part 23 Oct 2026 (texts/22oct1529_reading.md); f. 165v ll. 21-35, f. 166r ll. 1-5 and the word signs ꝑ, ℋ, ꝏ, # left open

Salgarella 2025 check for HT 34

Serrano, Correspondencia diplomatica ... Pio V (1914): not checked

Benda (ed.), Pápai János törökországi naplói (1963)

Puig's printed text of the letter (pp. 469-470), not in the repository

whether the Gonzaga condotta was concluded

Ráday Pál iratai I (1955) item 102 n. 1 not compared

lines outside the quoted stretch

Spanish court despatch to Wolsey, 2 Apr 1518, mostly in cipher, undeciphered

Spanish court despatch to Wolsey, 30 Jun 1518, mostly in cipher, undeciphered

Spanish court despatch to Wolsey, 16 Aug 1518, mostly in cipher, undeciphered

Letter partly in the cipher of John Marsh, then the same wholly in cipher not deciphered (4 pp.)

Charles I (Newcastle) to Ormond: wishes a safe way of intelligence; duplicate original in cypher, not decyphered

Charles I to Ormond, cypher in duplicate, not decyphered (answers Ormond and Digby despatch of 2-3 Dec)

Sir Edward Hyde (Jersey) to Secretary Nicholas: nearly all in cypher, not deciphered (secret commission under the Great Seal, Glamorgan?)

Fontenay to Nau (Mary Queen of Scots' secretary): cipher letter with an 'illegible interpretation'

The French ambassador in England (Chateauneuf) to Courcelles in Scotland, two letters in cipher with no decipher listed (entries 72 and 73)

Sir Arthur Chichester (Lord Deputy) to the Earl of Salisbury: short numerical cipher passage printed in the calendar, 'to be expounded by the ciphe...

Dr Nicholas Wotton to the Lord Protector: first and larger part in cipher, undeciphered

Thomas Fowler to Walsingham, Edinburgh: partly in cipher not deciphered

Sir Edward Hyde (Jersey) to Lord Digby: a portion interspersed with cypher, not decyphered

Sir Henry Bennet (Rome) to a lord: great part in cypher, 'still undecyphered' (praises Digby's negotiations, wants recall)

Royalist agent letter, Jan 1656 (item 67, Vol. CXXIII): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, Feb 1656 (item 76): italicised cipher passages undecyphered (Ross/Nicholas series)

Rome despatch to Wolsey, 15 Aug 1526, cipher undeciphered (War of the League of Cognac)

Rome despatch to Wolsey, 17 Aug 1526, cipher undeciphered (War of the League of Cognac)

Rome despatch to Wolsey, 21 Aug 1526, cipher undeciphered (War of the League of Cognac)

Rome despatch to Wolsey, 30 Aug 1526, cipher undeciphered (War of the League of Cognac)

Rome despatch to Wolsey, 5 Sep 1526, cipher undeciphered (War of the League of Cognac)

Burgos despatch to Wolsey, 27 Oct 1527, two passages in cipher undeciphered

Rome, 8 Nov 1517: Latin letter to Wolsey, part cipher undeciphered (collectorship, Peter Vannes)

Sir William Pickering → Council (early Dec 1552): Two pages, principally in cipher, undeciphered; Barnaby Fitzpatrick leaves the French court.

Unsigned letter from Anet, almost entirely in cipher 'undecipherable', apparently to the French ambassador in England (calendar no. 637)

Sir Valentine Browne to Burghley, Berwick: enclosure partly plain, 'the rest in cipher not yet deciphered' (covenants England-Scotland)

Courcelles to Chateauneuf: 4 pp. French, partly in cipher not deciphered

H. Saint Main to Fitzherbert (draft by Phelippes): italics in cipher undeciphered, mercantile allusions disguise the purport

Hyde to Bennet no. 3: passage in undeciphered cipher (Parliament, Fleetwood, Monck; expresses promise wonders)

Enclosure: a note in undeciphered cipher with the Lockhart/Mazarin conference letters

John Crosby to William Redcrosse [Thurloe?]: intercepted letter almost entirely in undeciphered cipher

[Marces] (Paris) to Hyde: 4.5 lines undeciphered cipher

Newsletter almost entirely in undeciphered cipher, French, 4 pp.

Royalist agent letter, Jan 1656 (item 88): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, Feb 1656 (Vol. CXXIV, item 13): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, 21 Feb 1656 (item 89): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, 29 Feb 1656 (item 109): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, 22 Mar 1656 (item 55): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, 20 May 1656 (item 50): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, Jun 1656 (item 62): italicised cipher passages undecyphered (Ross/Nicholas series)

Royalist agent letter, Jun 1656 (item 107): italicised cipher passages undecyphered (Ross/Nicholas series)

Sir Richard Morysine → Cecil (1551 (undated)): Two pages, partly in cipher, undeciphered; asks for money.

John Hales → Cecil (Apr 1551): Two pages, five lines in cipher, undeciphered.

Christopher Mount → Council (Jul 1552): Two pages, three lines in cipher, undeciphered (Diet of the Empire).

Letter 'for the most part in cipher, to which there is no key' (M. de la Vigne ill and discontented)

John Lee (spy) to Lord Burghley, Jan 1572 (Addenda item 4): passages in cipher undeciphered

John Lee (spy) to Lord Burghley, Apr 1572 (Addenda item 28): passages in cipher undeciphered

John Lee (spy) to Lord Burghley, Apr 1572 (Addenda item 31): passages in cipher undeciphered

John Lee (spy) to Lord Burghley, Apr 1573 (Addenda item 6): passages in cipher undeciphered

John Lee (spy) to Lord Burghley, Jul 1573 (Addenda item 71): passages in cipher undeciphered