Dossier in preparation
Beale Ciphers treasure-map debate
Which original reports describe Beale Ciphers treasure-map debate, and how have later accounts interpreted them?
Explore the recordHistorical Ciphers
Historical Ciphers
Famous unsolved or controversially solved coded documents.
I follow the original record. Dates, names and documents come before reputation or official assurances. Read the files, compare the accounts and examine the connections for yourself.
Research & writing
All research topicsDossier in preparation
Zodiac Killer 340 cipher solution
Which original reports describe Zodiac Killer 340 cipher solution, and how have later accounts interpreted them?
Explore the recordDossier in preparation
Dorabella Cipher Elgar mystery
Which original reports describe Dorabella Cipher Elgar mystery, and how have later accounts interpreted them?
Explore the recordTopics in this collection
Historical Ciphers
- Beale Ciphers treasure-map debate
- Zodiac Killer 340 cipher solution
- Dorabella Cipher Elgar mystery
- D'Agapeyeff Cipher unsolved challenge
- Chaocipher John Byrne algorithm
- Copiale Cipher secret-society ritual
- Shugborough inscription DOUOSVAVVM
- Fenn Treasure poem hidden location
Sources & further reading
All source recordsLibrary of Congress — Digital Collections
Library catalogue / discovery collection
Europeana — Digital Cultural Heritage
Cultural heritage discovery collection
Gallica — Bibliothèque nationale de France
National-library digital collection
Collections include research leads. An individual source record describes its role and access status.