Why aren't they as apt to be right as the Nixon library?
The Nixon library is THE Nixon library, not just A Nixon library <g>.
For general information: www.nixonlibrary.org
For reference questions: archives@nixonlibrary.org
The Assistant Archivist is Beverly Lindy.
If you have different quotes, why not bundle them up, and submit them to each of the libraries, and see how they resolve it? <g> Let's just hope they don't trust to "memory" as we do!
AK
p.s. I just checked the MIT link you gave. That is merely an article by Hoyt Bleakley. He could easily have mis-typed or mis-remembered the quote he used. I did not check your other sites, but having an archivist check a quote, especially when that library has the original documents, or copies of them, gives it a lot more credibility for me.
The truth be known, between NW, LG and me, I remembered it as "won't", not "don't", and as "Nixon", but I don't trust my memory enough to post when there is Google around <g>.