Zodiac Killer letter, July 31st 1969

Versions of
Letter and cipher (1969)
by Zodiac Killer

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Sent July 31, 1969, to the San Francisco Chronicle, San Francisco Examiner and Vallejo Times, the cipher was eventually cracked by a highschool teacher who read it in the papers. Although his next letter said this cipher contained his name, it actually included the phrase "I will not give you my name".

2657885Letter and cipherZodiac Killer

Versions of Letter and cipher include:

Translation of the cipher:

Harden worksheet, worksheet with the message deciphered by Donald and Bettye Harden (1969)