It is unknown whether any of these communications originated from the pen of the Zodiac Killer, but it doesn't hurt to explore every avenue, particularly regarding the March 8th 1981 communication where the author stated "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, are there any crimes or murders in the preceding months where the killer left any clues on or near any of his victims. Especially clues misinterpreted as inadvertent oversights by the murderer of the Atlanta children. We need to look at the March correspondence, allied to any recognisable Zodiac traits in previous months in Atlanta, particularly bearing in mind brown Caucasian hairs had been noted in the FBI files in at least one of the crime scenes - and considering the possibility that Wayne Williams may not be responsible for all the Atlanta killings.
Were these deliberately placed at the crime scene, or plain debris scattered at that location unrelated to the crime itself? Aural examination of the magnetic tape only revealed commercially recorded music.