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My collections:
articles
patents
G.Scherff letters part 1
G.Scherff letters part 2
JP.Morgan letters
That'll keep you busy for a while. :)

Also visit the Tesla museum website where you can order the "from Colorado Springs to Long Island Notes" and "the Unresolved Patents of Nikola Tesla".

(I have no idea how complete these letters-pdfs are. I uploaded them long ago)

Very Good, I will save all of those!
I am sure I am on to something, and perhaps the additional info will fill in some gaps.