Telegraph Cipher, Pinkertons National Detective Agency, 1895
Pinkertons National Detective Agency published a telegraph cipher to be used by members of the American Bankers Association which was one of the agency's major clients to report crime to them. The above is a photo out of a published book that Pinkertons National Detective Agency developed that was mailed to every member of the American Bankers Association. Note the different ciphers used to indicate a specific crime as well as the ciphers used for each address. You can learn more about the book sent out to every member of the American Bankers Association by clicking here. You can learn more about the telegraph and private investigators in the 1800's and listen to an actual telegraph you can type out by clicking here.

Below is a photograph of a page that gave instructions for members of the American Bankers Association on what to do immediately after a "burglary, forgery, swindle or robbery.

From The Ralph D. Thomas PI Vintage Collection
THOMAS INVESTIGATIE PUBLICATIONS, INC.
NATIONAL ASSOCIATION OF INVESTIGATIVE SPECIALISTS, INC.
SPY EXCHANGE AND SECURITY CENTER
P O Box 82148, Austin, Texas 78708
Showroom: 9513 Burnet Road, Austin, Texas 78758
Phone 512.719.3595 Fax 512.719.3594
Email: RThomas007@aol.com

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Copyright: 2006, Thomas Investigative Publications, Inc. All rights reserved.
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