I did the same thing with Open Office (downloadable for free at openoffice.org). With standard margins, using standard Times Roman 12 point font, the line breaks happen exactly where they do in the supposedly "authentic" memos. Amazing.
Apparently, some jerk just opened his word processor, typed these memos, printed them off, and then ran them through the copier enough times to make them look old.
And CBS puts this crap out there as "authentic", as pronounced by it's "experts".
For those who don't believe it by now, the mainstream media is your enemy.
That test seems to me to be pretty much fool-proof. Another test is to type out this letter using Courier or some other typewriter-imitating font which uses monospacing. The difference is obvious.