(Thanks to HOWARD DAVIS, if memory serves for this)
Possible clues of "CANCER" and:
"Action Guide Want Zodiac Birds Fly South Hidden Watch FLT 555 Magic Amulet".
The FBI thought "FLT 555" meant "Flight 555".
There was another additional mailing, check this out:
FBI FILE 3 pp42, 43, 64, 65
p.42
p.43
p.64
p.65
There is more than one way to lose your life to a killer
http://www.zodiackillersite.com/
http://zodiackillersite.blogspot.com/
https://twitter.com/Morf13ZKS
I feel this is very similar to the “zodiac your partner is I deep real estate” message and also the “Dr Gudini your prescription good, however need additional zodius” message from the anonymous tipster to the paper, I again see some sort of coded message, again the word “zodiac”, 555 (three of a kind), if 3 perpetrators involved, are FLT the 1st initials of the 3 involved to “fly south” for instance F= Fred, L=?, T=Taylor 
the magic amulet is also intriguing, deffo some sort of hidden message IMO
One thing of interest is that there was a Squadron 3726 who completed flt 555. This was at Lackland Airforce base in Texas, and was basic military training for the Air Force.
Nice 1 cragle, another possible military connection! Any suspects that were in the Air Force? 
One thing of interest is that there was a Squadron 3726 who completed flt 555. This was at Lackland Airforce base in Texas, and was basic military training for the Air Force.
Is this the one? https://www.bmtflightphotos.af.mil/Port … 97-074.jpg
555 is the number for ‘Christ’ in English Gematria. Whereas in Hebrew the name of ‘Jesus’ is 888 (something Richard Grinnell has made mention of: here and here).
The phrase "He is despised and rejected of men; a man of sorrows, and acquainted with grief:" (נבזה וחדל אישים איש מכאבות וידוע חלי) has a gematria value of 1397. The first occurrence of 1397 in pi is followed by the three digits 888:
888 is the gematria value of Ιησους ("Jesus")
This is the 13th occurrence of 888 in pi.
13 x 888 = 11,544
11 + 544 = 555
the word "Christ" appears 555 times in the Bible (KJV)This first occurrence of 1397 begins from position 17,160.
17 + 160 = 177
the words "Lord" and "Jesus" appear together in 177 Bible verses (KJV)
beginning from position 177 in pi are the three digits 555
There’s endless permutations of this obscure thinking in Bible Gematria.
It’s fairly extreme Kabbalah stuff, and very wide open to personal interpretation and therefore it’s hard to determine the significance of the number to Zodiac. I do think Zodiac is working some kind of date/number system.
The relationship to pi, is what caught my eye.
However what is more certain, is that the numerical features of Gematria are linked to the The 47th Problem of Euclid (aka the Pythagoras’ Theorem), creating a unique symbol that is celebrated in masonic regalia. So, there are some linkage between the Kabbalist number for Jesus and the ratios of the triangle.
Somewhat strangely, in Richard’s analysis linked above, the central section of the 13 hole card adds up to 347 in Gematria. In Hebrew gematria the number thirteen = 347. Curious given that 13 (or thirteenth) is included in the message, and written in large letters. I’ve mentioned before that 13 October has big significance for the Templars and freemasons, because was the day that calamity befell them.
