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OCR Page 1 of 2June llth, 1931.
Dr. Herman Schlundt,
University of Missouri,
Columbia, No.
Dear Dr. Schlundt:
Recently you advised me that you felt you
were making progress in the manufacture of phosphorescent aine
sulphide, and that you proposed sending a semple of this material
to us.
We would be very glad to receive a sample, and
hope that you can send us an appreciable size sample so that we
can make a little luminous material, and compere this material with
the phosphorescent zine sulphide which we are now using.
We should have at least 10 grams in the semple.
Have you made any further progress with the
mesothorium situation at Lindsey Light, since I last talked with
you on the subject?
Sincerely yours,
Vice President.
HHBarker: RH
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