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June 11th, 1931. Dr. James E. Ives Room 1-123 "C" Bldg., 16th Seventh St. S.W. Washington, D.C. Dear Dr. Ives: The gania ray electroscope arrived the other day, and 1 am glad to report in good condition. We can assure you that we were only too glad to cooperate with you by loaning you this instrument for your studies. With kind regards, I am Sincerely yours, Vice President. HHBarker:R