1. If they reflect real documents that once existed, then who typed those if Killian didn't type and Knox typed everything for him? It would seem to be Knox.
2. Knox also doesn't like Pres. Bush for some reason. She sounds like the busybody secretary who considers herself lord of the castle by virtue of longevity since commanders and staffs come and go. Privy to moments of frustration and bad days on the part of commanders and touchy moments between commander and subordinate, she didn't know how to separate those moments from overall evaluations.
In short, if she had evaluated Patton after Eisenhower dressed him down, SHE never would have given him another command. Eisenhower, however, a great commander who knew when to be good cop and when to be bad cop, put his CONSIDERED opinion in his evaluations of Lt Bush. His considered opinion was that the Pres. was an excellent aviator.
I've rated guys in the army, too, and you don't look at the moments they tick you off. You look at the entire year, at what they produced, at what you've learned that explains them.
Knox apparently got confused between her role -- secretary -- and the command role. SHE was the secretary.
At least, however, she was honest about these memos.
3. That means her selection for who might have been a disgruntled person with "knowledge" should be looked at. SHE probably knows that she either told the person about or showed the person the originals once upon a time.
Personally, I believe her statement that she didn't type the memos, however, I do think she was coached as to how to respond to the allegations contained therein. I seriously doubt any military officer would have ever asked his secretary to type up documents such as these for a personal "cover your back" file.
A good manager NEVER shows this type of stuff to anyone, they are personal notes. If he didn't type then, they would have been hand written, and not shown to anyone, including his secretary. Too easy for a secretary to use that information against the boss if she later had a disagreement, didn't like her own performance review, etc.
As a supervisor I kept files like this, but not even my secretary knew I had them, and only I had the keys to the cabinet. I would purge these files soon after the employee left my employ. Given all the comments everyone who knew Killian has made about him and his relationship with then Lt. Bush I seriously doubt there would have been notes with the tone reflected in these memos. I also seriously doubt he would have kept personal files on Bush (if there were any) until the time of his death in 1984. Any personal notes would have been destroyed by Killian himself long before.