You are correct regarding the word spacing issue, and exactly matching the MS layout. As I've said on other threads...
To me the smoking gun is wordwrap. Others have noted that the wordwrap of a manual typewriter works differently than a word processor.
In particular, MSWORD wraps the current word when the end of a word passes the right margin, so that no line of text exceeds the right margin. By contrast, a person typing manually finishes the word (or syllable with hyphen) he is typing when the right-margin bell rings, and then does a carriage return. The net effect of the manual typewritten style is that, if one draws a vertical line at the bell-margin, that line should go through (intersect) the last word of every line of text.
Clearly, from the 1 AUG 1972 memo (and possibly others), NO SUCH VERTICAL LINE CAN BE CONSTRUCTED THAT INTERSECTS THE LAST WORD OF EVERY WRAPPED LINE OF TEXT!
This fact says that the margin control of the documents was not done according to manual typewriting protocol. By contrast, the margin control ends up exactly what MSWORD produces.
I've pointed this out on other threads. And on another thread, Freeper bolobaby noted that "this is not definitive proof by any stretch of the imagination," because a typist has the option to manually violate the wrapping convention of the bell, and squeeze in extra words. But I replied, what are the odds that a manual typist, over the span of 4 memos, would exactly choose to squeeze in the EXACT SAME words, so as to "accidentally" coincide with what MSWORD would produce. I would say, with metaphysical certitude that the odds are nil. Bolobaby agreed.
ping - documents