ZODIAC CIPHERS
RICHARD GRINELL, COVENTRY, ENGLAND
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THE SLA LETTER - FEBRUARY 3RD 1974

1/6/2019

 
The Exorcist letter bore the postmark 'U.S. Postal Service CA 940 AM 29 Jan', listed in the FBI files as documents Qc62 and Qc63 with a lab number of D-740208094. The following month, in the February of 1974, the SLA (Symbionese Liberation Army) letter arrived at the San Francisco Chronicle. This letter has been ascribed the date of February 14th 1974 on all major websites - and because it followed the Exorcist letter - it is listed in the FBI files as documents Qc64 and Qc65 (envelope and letter) with a lab number of D-740304063. The SLA letter stated "Dear Mr Editor, Did you know that the initials SLA spell "sla", an old Norse word meaning "kill". a friend." 

In the FBI file below, it states "Enclosed for the Bureau is one photocopy and one xerox copy of letter and envelope received 2/26/74 from Inspector (redacted) Homicide Detail, San Francisco Police Department. Enclosed for Sacramento is one xerox copy of same letter. For the information of the Bureau, on 2/20/74, Inspector (redacted) advised that on 2/14/74 the enclosed letter was received by the San Francisco Chronicle and (redacted), reporter for the San Francisco Chronicle brought the letter to (redacted) as a possible Zodiac letter. (Redacted) thereafter turned the letter over to (redacted) questioned document examiner, United States Postal Office, San Francisco. Mr (redacted) has advised (redacted) that he feels the letter is a Zodiac letter".
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I don't believe this letter is from the Zodiac Killer - it was likely mailed by the Symbionese Liberation Army, somebody affillliated with them, or a sympathizer or friend. What the above document doesn't tell you, is when the SLA letter was mailed or postmarked. The above document read "that on 2/14/74 the enclosed letter was received by the San Francisco Chronicle." Received is not mailed. If we travel a little further in the FBI files we can find more information on the SLA letter and envelope, listed under Qc64 and Qc65, as circled in red on the above document.

The FBI files state on more than one occasion:
Qc64 Photocopy of envelope postmarked "U.S. Postal Service, CA 913 PM 3 FEB 1974", bearing the hand printed address "Editor San Francisco Chronicle San Francisco, California".
Qc65 Accompanying photocopy of sheet of paper bearing the hand printed message beginning "Dear Mr. Editor, Did you know that the....."  
   
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It is believed that the Zodiac Killer by mailing the SLA letter, was piggybacking the media exposure regarding the kidnapping of Patricia Campbell Hearst, granddaughter of American publishing magnate William Randolph Hearst. "On February 4, 1974, 19-year-old Hearst was kidnapped from her Berkeley, California, apartment. She was beaten and lost consciousness during the abduction. Shots were fired from a machine gun during the incident. An urban guerrilla group called the Symbionese Liberation Army (SLA) claimed responsibility for the abduction". Wikipedia.
​

According to the FBI files above, the SLA letter was mailed on or before February 3rd 1974 (postmarked 3 FEB 1974).
Therefore, it was likely mailed one day before the Symbionese Liberation Army kidnapping of Patty Hearst. This means one of four things:
[1] The Zodiac Killer was a member of the SLA. and was involved in the kidnapping plot. 
[2] 
The Zodiac Killer didn't belong to the SLA, but somehow knew of their plans to kidnap Patty Hearst.​
[3] The Zodiac Killer just got extremely lucky, writing "Dear Mr Editor, Did you know that the initials SLA spell "sla", an old Norse word meaning "kill". a friend", then mailing the letter on February 3rd 1974, just one day before Patty Hearst was kidnapped by the Symbionese Liberation Army​. In other words, it was sheer coincidence. Or,
[4] The letter was written by the Symbionese Liberation Army and had nothing to do with Zodiac.
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If this letter was mailed on February 3rd 1974, the day before the kidnapping, then it is highly likely it was mailed by the American left-wing militant organization ​themselves. Coming just five days after the January 29th 1974 Exorcist letter, in which Kevin Robert Brooks may have decoded the Asian characters to spell "To Kill", it is yet another amazing coincidence that the author of the SLA letter would highlight the word "Kill".   

The emphasis on the word "Kill" at the foot of both letters, within days of one another, had led me to believe they are connected. However, this is not the case. The Exorcist letter can be shown to be a genuine Zodiac correspondence, with the SLA letter having nothing to do with the Zodiac Killer.   

​
​SLA LETTER NOT ZODIAC - AND HERE IS THE FBI FILE TO PROVE IT

MAILED BY THE SYMBIONESE LIBERATION ARMY ON FEBRUARY 10TH 1974
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Richard
1/6/2019 07:28:19 am

If the postmark read "CA 913" then according to the zip code list, it was mailed from Los Angeles. https://www.zipcodestogo.com/California/

S.L.A Headquarters -San Francisco and Los Angeles.

This would need checking by somebody from the USA, maybe Tom1.

Tom1
1/6/2019 12:08:13 pm

Well I am learning more about zip codes and postmarks than I ever thought I would. More on that later. As far as SLA headquarters are concerned, they were on the run so safehouse location might be a better term. They did relocate to Southern California after the murder of an Oakland school oficial named, Marcus Foster, in 1973.

Richard
1/6/2019 12:19:41 pm

Cheers Tom, I have much more to follow on this story. So I'll keep silent for now.


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