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Best wishes,

Thomas Berry, Archivist
Historical Construction Equipment Association
16623 Liberty Hi Road
Bowling Green, Ohio 43402
Phone 419-352-5616
Fax 419-352-6086
tberry@wcnet.org
http://www.bigtoy.com

Bunker, Kevin wrote:

> Michael:
>
> Individual companies (in industry, law and the wholesale commercial trades)
> often had unique telegraphic code books. Locomotive builders used them;
> Southern Pacific Company employed a sequence of 3 or 4 versions including an
> executive code for securing/veiling company business transmitted over public
> and SP telegraph lines. My  last employer, California State Railroad Museum,
> has acquired some of SP's historic code books for its reference library.
>
> I have noted since that the practice seems to have been more for security than
> economy (which could prove useful in our email world of today, no?).
>
> Kevin V. Bunker
> Student Assistant
> CA State Archives

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