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Columbia Universitp College of and Surgeons DE LAMAR INSTITUTE OF PUBLIC HEALTH 600 WEST 168TH STREET NEW YORK December 11, 1939 Mr. J.E. Paul United Ptates Radium Corp. DEC187939 535 Pearl Street New York City, N.Y. Dear Mr. Paul: Would it be possible for me to bring my class down next Monday afternoon, December 18th around 2 O'clock to visit your plant as well as the thermometer plant. I will be going away sometime around the first of January and would like to bring the class down myself if it does not inconvenience you. If this week Friday will be better it can be arranged. You can telephone me which time is most convenient instead of taking the bother of writing a letter. Yours sincerely, Fudmik R. Thin Frederick B. Flinn Director of Industrial Hygiene. FBF:GD