Lisbonian Selection of Roots and Terminals
Book details
- Title
- Lisbonian Selection of Roots and Terminals
- Publication year listed
- 1911
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Lisbonian Selection of Roots and Terminals
Author: John Charles Hartfield
Year: 1911
A code book for sending private (encoded) messages via telegraphy, by translating each group of numbers into a set of 5-letter artificial "words" that are unlikely to be garbled by a telegraph operator. This item was found in the NSA's collection of William Friedman's documents, as this file: 41768689080778.pdf. It was published in 1911 so its copyright has expired and it is in the public domain.
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