This is pretty good... I think puppy has a good sample too... one of these days I will put a copy on my pc so I can pass it out .. but right now I don't have it...
YOu could add a line near the end like
I would hate to have to take this affair further public than this letter, but I will if I have to
I just am thinking if there is something in there that warns the recipient of the consequences if they IGNORE the letter...