As you know, since the series had a few Dragonlance references, I am a very, very, very big fan of the Dragonlance series – and Margaret Weis just posted:
This is a letter from Raistlin to Caramon. I wrote this in January, 1984 when I was at TSR. (You can see from the time stamp.) This was written three months before the short story, Test of the Twins, appeared in Dragon and months before Tracy and I decided to write Autumn Twilight. i recently found this in a box in a closet.