This, along with the observations shown in a previous article, should help to authenticate a letter long believed to be a hoax by many in the Zodiac community. This could very well rule out David Toschi as the author of the 1978 letter and finally clear his name altogether. The San Francisco Police Department DNA report states that a "DNA sample was obtained" from the 1978 letter. Therefore, if the 1978 letter is genuine, we already have the Zodiac Killer's DNA. If anybody has information showing that the Melvin Belli letter was published in the newspapers prior to April 24th 1978, please let me know and this article will be amended or deleted.
I would like to thank Zodiac researcher Druzer, whose initial insights into the structure of the Zodiac letters have made all this possible. Including the article "A Pattern of Writing".