This letter mailed to the San Francisco Examiner is similar to the San Francisco Chronicle and Vallejo Times-Herald letter and contained Part 2 of the three ciphers, which totaled up to become known as the 408 cipher, due to each part containing 136 characters.
The letters claimed credit for the first two attacks at Lake Herman Road on December 20th 1968 and Blue Rock Springs Park on July 4th 1969.
Betty Lou Jensen and David Faraday died in the Lake Herman Road attacks, but in the following encounter with the Zodiac Killer at Blue Rock Springs, Michael Mageau survived despite being shot four times, unfortunately however, Darlene Ferrin succumbed to her injuries on arrival at Kaiser Hospital.
On August 8th 1969, just over a week after the arrival of the three letters, the 408 cipher was cracked by Donald Gene and Bettye June Harden of Salinas, California, who both used homophonic substitution to identify a solution.
The decoded cipher turned out to be the killer's thoughts and ramblings, containing numerous spelling errors, either by design or otherwise, but despite the letters claiming he would reveal his identity it turned out he was not so forthcoming. See also;
Vallejo Times Letter and Part 1 of Cipher
San Francisco Chronicle Letter and Part 3 of Cipher
I like killing people because it is so much fun it is more fun than killing wild game in the forrest because man is the most dangeroue anamal of all to kill something gives me the most thrilling experence it is even better than getting your rocks off with a girl the best part of it is that when I die I will be reborn in paradice and all the (people) I have killed will become my slaves I will not give you my name because you will try to slow down or stop my collecting of slaves for my afterlife ebeorietemethhpiti
I am the killer of the 2 teenagers last Christmass at Lake Herman + the girl last 4th of July. To prove this I shall state some facts which only I + the police know.
1 brand name of ammo - Super X
2 10 shots fired
3 Boy was on his back with feet to car
4 Girl was lyeing on right side feet to west
1 girl was wearing patterned pants
2 boy was also shot in knee
3 ammo was made by Western
Here is a cipher or that is part of one. The other 2 parts are being mailed to the Vallejo Times + S.F. Chronicle I want you to print this cipher on the frunt page by Fry afternoon Aug 1-69. If you do not print this cipher, I will go on a kill rampage Fry night. This will last the whole weekend, I will cruse around killing people who are alone at night untill Sun Night or un till I kill a dozen people.