Hi-
I was looking over all three of these letters today and started highlighting the differences between them. The Chronicle letter has many features that distinguish it from the others but I can't say what that is so:
1) This one starts out with, "This is the murderer..."
2) This is the only one that mentions the golf course
3) Patterned is misspelled in only this letter.
4) The word "slacks" is used in only this letter.
5) This is the only one that makes mention of the fact that Z's identity is in the cipher.
6) It is the only one that has the word "OVER" on it to refer to the second side.
7) It is written with a different, thicker pen.
8) The date 1 of Aug 69 is formatted differently from the rest.
9) It is the only one that refers to the fact that the other two letters were sent to the "editors" of the other papers.
I wonder why...chance variations or some important reason?
There is an old discussion from Tom's board from 2002 about at least some of these issues.
Mike

