Would you guess, as I would, that it's a federal crime to possess/use forged and altered government documents for the purpose of committing massive fraud over state lines in an effort to interfere with a federal election and to do so under color of a federally granted broadcasting license?
And further, if there were reasonable cause to believe this had occured, wouldn't the Attorney General, in response to citizen complaint, have authority to order an FBI investigation of such alleged crime?
And, if such an order were given by the AG, wouldn't the FBI have ample resources for determining how these documents were made, what machine/s they were typed on, and when they could and could not have been composed? Wouldn't the FBI be in position to determine where that stationary came from, how old it was, whether the Texas/Alabama ANGs used it back then, as well as similar information about the ink/s?
My answer to all of these question is "yes."