https://forum.zodiackillerciphers.com/community/code-key-mailed-to-vallejo-pd-8-10-69/ Zodiac Killer Discussion Board en-US Wed, 09 Sep 2026 03:35:45 +0000 wpForo 60 https://forum.zodiackillerciphers.com/community/code-key-mailed-to-vallejo-pd-8-10-69/donald-harden-sent-code-key/ Wed, 07 Nov 2018 16:35:37 +0000 https://drive.google.com/open?id=1V3GiW ... a0v448mLsO Page 2: https://drive.google.com/open?id=1BXARq ... QxaIFek6rY Page 2 states: "The results of the cryptographic and fingerprint examinations are also being furnished seperately. Specimens submitted for examination" About 2 months later (10/17/1969) an examination is requested of several documents including Q16 to Q18. By then they knew that the fingerprints belonged to Donald Harden. Page 1: https://drive.google.com/open?id=17jx6z ... ED-yHPkeDf Page 2: https://drive.google.com/open?id=15Eo8A ... Ml_vlx3STx Page 3: https://drive.google.com/open?id=1D3WoS ... 2wx2XZMXFF Page 4: https://drive.google.com/open?id=1_1ont ... 0_kON7_U9C The section dealing with Q16 to Q18 can be found on page 3 and states: "Q16 - Q18 Not involved, letter from anony. (school teacher) cracking cryptogram" ]]> 'Code Key' mailed to Vallejo PD 8/10/69 Jarlve https://forum.zodiackillerciphers.com/community/code-key-mailed-to-vallejo-pd-8-10-69/donald-harden-sent-code-key/ https://forum.zodiackillerciphers.com/community/code-key-mailed-to-vallejo-pd-8-10-69/code-key-mailed-8-10-69-to-vallejo-pd/ Fri, 29 Mar 2013 07:33:04 +0000 A little-known letter containing a key to the cryptogram was sent anonymously to the Vallejo Police on August 10, one day after the Harden solution was made public. It was postmarked San Francisco, and the typewritten address was to a VPD sergeant. The key was handwritten on a sheet of white paper, and was accompanied by a short typewritten note on a 3x5 index card expressing hope that "the enclosed key will prove beneficial to you in connection with the cipher letter writer." It was signed " concerned citizen." The key was described in an FBI report as "generally valid" and "substantially accurate", but this is unsurprising since the author probably read the decryption in the newspaper and simply made his own key letter by letter. One useful palmprint was found on the envelope, but it was never matched to any individual." Thru the Freedom of information act, I was able to obtain a copy of this key: ]]> 'Code Key' mailed to Vallejo PD 8/10/69 morf13 https://forum.zodiackillerciphers.com/community/code-key-mailed-to-vallejo-pd-8-10-69/code-key-mailed-8-10-69-to-vallejo-pd/