June 3rd, 1931
June 3, 1931 Mr. Nikola Tesla. Hotel Pennsylvania. New York City. Dear Mr. Tesla: Among those who...
Nikola Tesla Letters
Letters to and from, or regarding Nikola Tesla
June 4th, 1931
Westinghouse Electric & Manufacturing Company East Pittsburgh, Pa. Office of W.K. Dunlap Acting Vice...
June 8th, 1931
HARVARD UNIVERSITY THE HARVARD ENGINEERING SCHOOL Comfort A. Adams Pierce Hall Cambridge...