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Department Archives Remove constraint Department: Archives Language English Remove constraint Language: English Place New York (State)--New York Remove constraint Place: New York (State)--New York Rights In Copyright Remove constraint Rights: In Copyright

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    • 1935-Jun-03

    Letter to Arnold O. Beckman about the early stages of planning marketing and distribution for the pH meter. The National Postal Meter Company on the letterhead was one of Arnold Beckman's first employers, when they…

    • 1935-Nov-11

    The letter regards Arthur Noyes's test results and serum supplied for his treatment.