Cracking a 19th Century Commercial Code

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Well into the 20th century, commercial "book" codes were used to obscure business communications.
This talk will discuss one of those codes from the 1890's, that uses a dictonary of more than 25.000 English words, including place names. The author claims "absolute secrecy." An example from the instructions will be used to demonstrate the method of decryption.
Speaker(s): Tom O'Brien,
11:30: Business meeting: Call to order, minutes of last meeting, treasurer's report, committee reports, new business,
12:00: Lunch
12:30: Technical talk and discussion
Bldg: At the Quarry, Paesanos , 555 East Basse Rd, San Antonio, Texas, United States, 78209

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