Hello its me. Haven't you people figured out who is killing these little people yet. I'll give you a hint, I used to be in San Francisco. I used to stalk women, but I like to kill children now. At all my victims bodies I have left certain clues, but I guess it's too much for you Rebels to handle. So I guess I'll have to tell you. I'll (to) kill children because they are so easy to "pick off: Buy the way, if you still have letters from the other murders, I am not writing in the same hand writing.
The author of the letter, dated March 8th 1981, was suggesting he was responsible (in part) for the Atlanta Child Murders from 1979-81,
The FBI Bureau requested that the FBI laboratory "compare this letter with any other letters on file from the Zodiac Killer, responsible for a string of unsolved murders in San Francisco in the early and mid 1970's." What 'unsolved murders' the Zodiac was responsible for in the early to mid 1970's is difficult to ascertain.
Here is more great discussion on the ZodiacKillerSite forum regarding the 'Hello It's Me' or 'Peachtree' letter. If you scroll down the forum page you will notice a second mailing around the same timeframe, described as similar to the Sacramento 'Cancer' and 'Fairfield' Leo cards mailed on December 10th 1969 and December 11th 1969 respectively - in a prepaid envelope. The message read "PLEASE STOP FORCED BUSSING OR I WILL KILL 3 MORE BLACK BOYS IN ATLANTA IN MARCH !".. Note the comparison to the 148 character cipher and letter mailed from Fairfield to the San Francisco Chronicle in 1971, where the author threatened to "SKIN 3 LITTLE KIDS" if his communication was not published on the front page of the Chronicle. A weak connection admittedly.
There is a strong possibility that the author of the 'Peachtree' letter was the same individual responsible for the May 1978 'Channel Nine' letter. Both were mailed to television stations, WXIA-TV in Atlanta and KHJ-TV in Los Angeles, the handwriting looked similar (although subjective) and both contained racial overtones. The 'Peachtree' envelope contained the acronym ATKID for Atlanta Child Murders, along with the Zodiac crosshairs. The 'Channel Nine' envelope contained the acronym AIC 1 2 3 4 5 6 7 AGCGTH (All Good Children Go To Heaven) from the Manson Family's Spahn Ranch, along with the Zodiac crosshairs once again. All Good Children Go To Heaven is a British nursery rhyme: "One, two, three, four, five, six, seven, All good children go to heaven; When they die their sin's forgiven, One, two, three, four, five, six, seven, All good children go to heaven: A penny by the water, Tuppence by the sea, Threepence by the railway, Out goes she!"