If you take character spacing, spaces between words and spacing between lines (jeez, I haven't heard of "Leading" since before, ummm... well, way back :-) of the 1972 14 line document, and look at the documents in terms of total type volume taken up, there is no way they can exactly match. NO WAY.
I realize the source (somebody's prof) is unnamed, but regardless, as a computer professional, I support what they put forth. Think about it.
The only way the past and present documents could match is if CBS did not publish exact images of what they had, in other words, in making the documents available to the world, they put what they had through some process that changed character spacing, word spacing and line spacing, such that it exactly corresponded to a Word document.
I regard that possibility as remote. Even if it is a possibility, CBS would be called on it, and they would then be forced to produce exact images of what they had. Then we could tear them apart all over again.
Note that the unnamed source's contact info is available upon request from the person who wrote the piece.
I'm all whupped out from following this into the wee hours, got to get some sleep, so please, if there's somebody out there with more energy than I, take this and run with it, I ain't proud. :-)
Correction to above:
"1972 14 line document" should read "18 Aug 1973 14 line document."
Sorry, just a bit tired.
Regarding the possibility that CBS "copied" the documents they have (presumably typewritten) with a computer: Why would the so copied documents look so old? They would look "new", and CBS would say something like: we copied them to make then more readable. Obviously, this is not the case.