American Experience

William Friedman: Cryptologist

Clip: Season 33 Episode 1 | 1m 14s

William F. Friedman married Elizebeth Friedman in 1917 and the two began a life of codebreaking for the U.S. Government. During WWI, they invented new methods of codebreaking and laid the foundation for modern cryptology.

Aired: 12/15/20

Rating: NR

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The Chinese Six Companies


The Chinese Six Companies

On May 28, 1900, San Francisco policemen formed a perimeter around Chinatown as officials diagnosed bubonic plague in the neighborhood and wanted to quarantine the nearly 20,000 residents. As tensions flared, an influential group of merchants known as the Chinese Six Companies sprang into action.