This is the 4th page of the hundreds of pages released by FBI, in the Zodiac case. It is a submission statement from FBI Sacramento September 1968, to FBI headquarters, jointly with Vallejo PD. It request analysis of the ciphers. It states that local law enforcement reviewed the documents for latent fingerprints and submitted the letters and ciphers to the Navy . It then says the Navy reviewed them by were NOT examined by the ‘Cryptographer’. If you send ‘ciphers’ to the Navy, you want the cryptographer to try to crack them .. Out of the hundreds or thousands of pages released by the FBI on Zodiac, less than 0.00001 percent even mentioned analysis of the ciphers and in 1980’s , the assistant Director of the FBI sent a response to the Chief of Police in San Francisco, who was begging for help with the ciphers, that they have worked on them since receiving them, especially the z340 and nothing conclusive has been discovered and they would continue ‘when they had time’ and if anything comes up he would be the first to know.. IE: we aren’t sending you (sht) – and stop asking .. you don’t get it, we are not going to help you .. That is why the case is still an open case ..
The first document is in section 1 of 6 & the second document is in section 4 of 6.
https://vault.fbi.gov/The%20Zodiac%20Killer/The%20Zodiac%20Killer%20Part%2001/view
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https://vault.fbi.gov/The%20Zodiac%20Killer/The%20Zodiac%20Killer%20Part%2004/view
Posted by ben_watson_jr