Cryptomenysis Patefacta

"Cryptomenysis Patefacta, or Art of Secret Information Disclosed Without a Key is a 1685 non-fiction book written by John Falconer, it was only the second text written in English on the topic of cryptography. In 1693 it was republished as Rules for Explaining and Deciphering All Manner of Secret Writing." [Cryptomenysis Patefacta, Wikipedia, 12/20/2020] The 1685 edition edition is available online at the Internet Archive.

Dr. Henry Armitage consulted the Cryptomenysis Patefacta for help in deciphering Wilbur Whateley's diary. [HPL Dunwich (online text)]

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