Not to worry. Mash here: http://www.indcjournal.com/
They interviewed one of the top forensic typography experts in the world, and he is 90+% sure they are fakes, based on the font in the fakes not matching fonts on machines available at the time, based on an encyclopedic catalog of all available fonts.
That is to say noting of the dozens of other indicators of forgery which have yet to be refuted.
It'd be so great to nail Dan Rather for the Rat slime he is.