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Navajo code talkers Enigma Jade cipher machine Purple cipher machine frequency distribution for plaintext and its repeated-key Vigenère cipher German ADFGVX cipher. DES flow diagram Vigenère table
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A botanical illustration from the Voynich manuscript, a codex, scientific or magical text in an unidentified language, in cipher; end of the 15th or during the 16th century (?).
Codes, Secrets, and Ciphers Quiz
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Abstract vector hi speed internet technology background
History of Technology Timeline
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
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The United States Supreme Court building, Washington, D.C.
14 Questions About Government in the United States Answered
Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar
Ten Days That Vanished: The Switch to the Gregorian Calendar
Alpaca and Llama side by side
What’s the Difference Between Llamas and Alpacas?
Secret Service Agent Listens To Earpiece
Secret Service Code Names of 11 U.S. Presidents
Germans from East and West stand on the Berlin Wall in front of the Brandenburg Gate in the November 10, 1989, photo, one day after the wall opened.
Timeline of the 1980s
Aspirin pills.
7 Drugs that Changed the World
Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society
12 Novels Considered the “Greatest Book Ever Written”

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Photos

Navajo code talkers
Enigma
Jade cipher machine
Purple cipher machine
frequency distribution for plaintext and its repeated-key Vigenère cipher
German ADFGVX cipher.
DES flow diagram
Vigenère table
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Key People

Agnes Meyer Driscoll
American cryptologist

Related Quizzes and Features

Quiz
A botanical illustration from the Voynich manuscript, a codex, scientific or magical text in an unidentified language, in cipher; end of the 15th or during the 16th century (?).
Codes, Secrets, and Ciphers Quiz