The Public Domain Review

This is just an automatic copy of Public Domain Review blog.

Update

Updating database... Please wait.

Barnard’s Universal Criminal Cipher Code (1895)

Tuesday 6 September 2016 at 17:54

A book of codes to help disguise internal police telegrams in what amounted to some kind of 19th-century version of the encrypted email.

Source: http://publicdomainreview.org/collections/barnards-universal-criminal-cipher-code-1895/