[RobRoy]

As I read all the ways someone could possibly have done this or that thing in the document in 1973, I keep thinking the following:

Either the documents are forgeries, or they are the rube goldberg typewritten documents from hell.

Please choose one

[Warren_Piece]

This whole thing reminds me of the analogy some people make in evolution arguments. Believing every one of the anomalies that have been pointed out here came together perfectly in one document typed in the early 70's is the same as believing you can set off an explosion in a junkyard, the result being a perfectly functional 747.