This looks completely different. It also looks as if it was a person who really knew how to write trying to fake their handwriting. Compared to the ones to the Senate, this looks "normal." Standard Zip, the ones aren't "perfect European."
I have to admit, I had really worried that this whole thing might have been domestic conservative/libertarian terrorists. Now I'm not worried. I think that this letter, without anthrax, was from an American who is a f*cking idiot, but not a murdering idiot. And the ones with anthrax were from international terrorists.
Yes...I know it looks different, but it is related to all the letters that have been sent. I thought posting it here for comparison would be a good idea since this letter was in another thread here recently.