It's interesting that in the year since we brought old Rather down, not one document of any kind from the 1970s has surfaced with the kind of typography found in the CBS memo. And not one typewriter or type ball with the necessary characteristics has surfaced.
I was one of those urging caution on the night in question, because I had used a Composer in 1974. I knew, of course, that no military secretary could possibly have access to a Composer, or could use it to type routine memos, but I was worried about a setup.
It wasn't until the next day when the detailed analysis demonstrated the fonts were different that I was absolutely certain. All in all it took about 24 hours to demolish 60 Minutes.
That could make the title of a movie: "60 Minutes: Gone in 24 Hours."
I think you're onto something!