The following day, the San Francisco Chronicle published another article which featured the opinions of Nancy Slover, David Slaight and Bryan Hartnell, who were the only three people credited with hearing the Zodiac's voice to date. The headline of that column read That Wasn't Zodiac, Say 3 Who Know, to which the Zodiac Killer would reply in his message in the 340 cipher by confirming "That wasn't me on the TV show". He took the newspaper headline and incorporated it into his hidden message. The Zodiac Killer was effectively rejecting the notion that the person who appeared on the Jim Dunbar Show claiming to be him was the genuine article - the caller was a fraud or imposter.
At the time the Zodiac Killer mailed the 148 character cipher in 1971, the 340 cryptogram was unsolved. Yet here we have two lengthy cryptograms, both of which are incorporating in contemporary form the rejection of an imposter or phony by using the phrases "That wasn't me on the TV show" and "stop listening to phonys" - and both cryptograms incorporated the language used in two newspaper headlines.
The 340 and 148 character cryptograms are inextricably linked through a message that is contemporary in nature, both are the rejection of two people connected to his crimes (and claimed crime), and both the Dripping Pen card and 148 character cipher are indelibly linked to the murders of Kathy Reyne Snoozy and Debra Gaye Furlong who were horribly killed and mutilated on August 3rd 1969 in San Jose. The Zodiac Killer would finish his written message in May 1971 with the wording of "I will send a patch of human skin if their is some left over". This was a threat to kill another three kids, just like Snoozy, Furlong and Bilek. The nature of these three brutal stabbings (in excess of 300 knife wounds) should leave you in no doubt the meaning behind the sinister message of "I will send a patch of human skin if their is some left over".