Mathemagician

Dear Ed,
 
I don't have a translation of the Mathemagician's letter, but I have some thoughts.  (I looked through most of the entries in the rec.puzzles site you cited, which triggered some of the thoughts, as you'll see.)
 
1.  If it's a straight number-to-letter cryptogram, then the entire missive is composed using only ten of the letters of the alphabet, which doesn't seem likely, though I suppose it's possible.  Even just the two words "Azaz" and "Mathemagician" together use ten different letters, and it immediately goes over that if you start with "Dear" or "King".
 
2.  If that's still the case anyway, it can't be "Dear Azaz," because the first "word" doesn't contain any of the same numbers as the second (no "a"); so it would seem to need to be "King."
 
3.  Two of the words in the body of the letter end in a single 9.  If that's Z in Azaz up top, that could be a problem, because other than names like that, and foreign words like "fez," and a few invented odd words like "quiz," we don't ends words in a single Z in English.  (There are a very few with double Z endings, like "fuzz" and "jazz" and "pizzazz.")
 
4.  Several people on rec.puzzles suggested that it's a phone-dial code.  But the phone dial has no letters on 1 or 0.  You might justify putting the Z on zero, but the most likely place it would be used is in the address line, where it would seem to be 9.  And you couldn't very well assign A to the 1 when it's already on the 2.
 
5.  Many people on rec.puzzles suggested that the sign-off would have to be something like "Yours truly, Mathemagician" (some add "or the like").  But the last numerical "word" is not long enough to spell that, regardless of whether you think it's an anagram or a phone-dial code.  Also, its characters don't repeat in anything like the right places for the two "ma"-s in the name.  And, the word that should be "Yours" is also too short for that.
 
6.  The first "word" of the body of the letter is a three-character word starting with a double character.  In letter-spelled English words, the only one like that I can think of is "eel," which doesn't seem likely.
 
7.  What if it were a straight cryptogram with all of the words spelled backwards?  That would overcome the problems in thoughts 3 and 6, though if 1919 represents "Azaz," then we'd have a word in there starting with Z-something-Z, which I can't picture.
 
Kent Cooper

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I suspect that, as suggested in the rec.puzzles threads, the
Mathemagician's cryptogram is meaningless beyond the intentional
matching for the name Azaz, or if not, that there is simply not enough
information to decipher it.

Joseph DeVincentis