ZODIAC CIPHERS
RICHARD GRINELL, COVENTRY, ENGLAND
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MY NAME IS ARTHUR GORDON PYM

8/31/2024

 
PictureEdgar Allan Poe
The first part of this presentation is from a previous article.
On October 22nd 1969, the San Francisco Examiner newspaper published an article by Will Stevens, which laid down a challenge from Professor D.C.B. Marsh of the American Cryptogram Association (ACA) to the Zodiac Killer, attempting to coax him into revealing his name.

The newspaper stated
 
"Dr Marsh told the Examiner today: "The killer wouldn't dare, as he claimed in letters to the newspapers, to reveal his name in the cipher to established cryptogram experts. He knows, to quote Edgar Allan Poe, that any cipher created by man can be solved by man. Zodiac has not told the truth in his cipher messages to the Examiner, the Chronicle and the Vallejo Times-Herald. Zodiac has not done this, because to tell the complete truth in relation to his name -in cipher code - would lead to his capture. I invite Zodiac to send The American Cryptogram Association a cipher code - however complicated - which will truly and honestly include his name".

Professor D.C.B. Marsh was probably hoping the Zodiac Killer would employ a cryptographic technique featured in the works of Edgar Allan Poe, thereby making any future cipher mailed by the Zodiac Killer easier to crack. As it turned out, the Zodiac Killer's 340 cipher mailed on November 8th 1969 could be solved using the scytale method of encryption detailed in Edgar Allan Poe's essay A Few Words on Secret Writing in the very first paragraph. We have Professor D.C.B. Marsh of the American Cryptogram Association creating the trigger, by inserting Edgar Allan Poe into the mind of the Zodiac Killer. The Zodiac Killer then created the 340 cipher that could be deciphered using the scytale method featured in Poe's A Few Words on Secret Writing. Therefore, what are the odds that one of Edgar Allan Poe's poems would partially appear in the solution to the 340 cipher?

I HOPE YOU ARE HAVING LOTS OF FUN IN TRYING TO CATCH ME - THAT WASN’T ME ON THE TV SHOW - WHICH BRINGS UP A POINT ABOUT ME - I AM NOT AFRAID OF THE GAS CHAMBER BECAUSE IT WILL SEND ME TO PARADICE ALL THE SOONER BECAUSE I NOW HAVE ENOUGH SLAVES TO WORK FOR ME WHERE EVERYONE ELSE HAS NOTHING WHEN THEY REACH PARADICE - SO THEY ARE AFRAID OF DEATH - I AM NOT AFRAID BECAUSE I KNOW THAT MY NEW LIFE IS LIFE WILL BE AN EASY ONE IN PARADICE DEATH.   

"To One in Paradise" was written by Edgar Allan Poe. This poem was first published as part of the short story titled "The Visionary" (later retitled as "The Assignation"). The poem was also published under the names "To lanthe in Heaven" and "To One Beloved". The title "To One in Paradise" was used in the February 25, 1843 Saturday Musuem. This poem was written after the death of Poe's wife. He writes that she was his life and he lived for her and now he looks forward to the future where they will be together again in death. link.

The Zodiac Killer would eventually mail the April 20th 1970 letter containing a 13 character code, prefixed with "My name is". The 340 cipher could be solved with the scytale method of decryption featured in Poe's essay A Few Words on Secret Writing, so it was extremely noteworthy that the second encryption technique covered in Poe's A Few Words on Secret Writing involved splitting the alphabet A through M, and N through Z. The Zodiac Killer's code on April 20th 1970 began with "A", ended with "M", and was 13 characters in length (half the alphabet). But why did the Zodiac Killer prefix the code with "My name is"? Edgar Allan Poe's only complete novel was entitled "The Narrative of Arthur Gordon Pym of Nantucket". The very first line of this book read  "My name is Arthur Gordon Pym". 
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Rubislaw32 link
8/31/2024 03:31:41 am

For what it's worth, Richard, and a personal perspective:

Professor Marsh's challenge was answered by the Zodiac in his San Jose letter & cryptogram of November 21st 1969. But, suppressed from public viewing at the time - which, more than likely, included Marsh's knowledge.

The Zodiac was inspired by the lyrics from The Beatles song ''I am The Walrus'': ''Man, you should have seen them kicking Edgar Allan Poe.''. The song's lyrics are the ramblings of a narrator who reveals himself as ''The Walrus''. The cryptogram solution: O I F B I O.

Egg Man - 1, FBI - 0. The Egg Man wins, and FBI are left with egg on their faces.

Why might the Zodiac have declared himself as ''I am The Walrus'' to Professor Marsh ? The Walrus in the poem by Lewis Carroll really was a ''re-work'' on The Pied Piper of Hamelin. The Walrus entices young Oysters to follow him, with the young Oysters ending up as a tasty meal for The Walrus and The Carpenter.

The Walrus as a selection of name, by the Zodiac, was to further his warning that he was a danger to ''kiddies''. A parent's worst nightmare.

Richard
8/31/2024 05:20:00 am

I think the Edgar Allan Poe inspiration wasn't contained to one communication, just like the November 21st 1969 letter, which when unredacted will likely reveal a San Jose address. I have several ideas for that short code, which may or may not change when the full context of the letter is revealed. But I suspect the code is connected to something in the 340 cipher. What I am basically saying, is I need more information to draw any firm conclusions. I am unsure whether this letter was actually mailed on November 21st 1969, it could have been days earlier. .

Rubislaw32 link
8/31/2024 06:34:32 am

I can understand your point of view, Richard.

The Zodiac was certainly a mischievous scallywag. It appears the San Jose letter ended up at FBI's Butte office, Montana (on request ?).

Perhaps, this was confused with Butte County, CA (?), with much of the film ''Gone with the wind'' shot at Paradise, Butte County.

Paradise, just north of Butte Valley. I don't suppose the schoolboy in the Zodiac missed the opportunity to visit Butte Valley.

Paul Ramon
9/13/2024 06:43:44 am

Is graphic design your passion?

Steve
10/5/2024 08:51:06 pm

Thank you for all your hard work over the years. Years ago I sent a theory on the 13 cipher to Dave Oranchak and Mike Morford based on something you wrote. I don't know if they've ever told you what it is, but it's encouraging to know that people are still working on it.

Chris
10/23/2024 10:40:17 pm

Hey I saw the z13 letter a few weeks ago and I've cracked a pretty significant amount of the layers that are involved with this cipher. I've sent my reddit post to the fbi and haven't gotten any response but it's only been a day ... anyways here's the link .. https://www.reddit.com/user/Thrills4Shills/comments/1g14eq5/my_solution_to_the_z13_cipher_as_i_have_time_to/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button

I have to add I worked on this over the period of a couple weeks and didn't know anything about the case until I had to look outside of the cipher to help me progress. Poe and pym are in the letter written upside down. Thanks for the information you provided.

Chris
11/20/2024 11:06:12 pm

Just an update on the z13. It's still solved but I also found a hidden clue that led me to how to crack the z340 correctly too. The clue was a starting position. The z340 then provides the transposition key on paper by way of folding. There is so much information tucked away inside the cipher. Being in a 70s cult must have been so awesome. I wasn't born yet.


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    The Zodiac Killer may have given us the answer almost word-for-word when he wrote PS. The Mt. Diablo Code concerns Radians & # inches along the radians. The code solution identified was Estimate: Four Radians and Five Inches To read more, click the image.
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