[The Great Satan]

Okay, here's a better picture. This is clearly European, A4 format.

[Nogbad]

This is clearly European, A4 format.

I wonder what kind of stationary they use in the Middle East?

Here is a wild hypothesis:

The letters were photocopied in the country where the anthrax was made.

[Nogbad]

One thing is obvious.
This aerosolized anthrax is lethal
unless handled by experts in a highly secure laboratory.

Those envelopes were not filled in someone's garage in south Florida.

Anyone disagree?????????

They were filled in a lab somewhere,
and the paper size indicates,
(along with a million other things)
the lab was not in the USA.
Looks as if poor old Haznawi, and maybe Atta,
got a cutaneous infection from some of the anthrax
that leaked out of the envelopes
while they carried them back to the USA.

[aristeides]

There are reports of telephone contacts between Europe (for example, a bar next to a mosque in Madrid) and the hijackers in the U.S. days before 9/11. If you faxed this kind of letter on the European-size paper to the States, could a fax machine here require or prefer the European-size paper?

[Musket]

Yes, this appears to be A4, 8.27 x 11.69.

[bvw]

Where's the letter with the brown stains on it?

Small vial, brown stains.