Letters Sent to W.S. Ingraham, July 12, 1926

NOINITMI lo lo .omeM July 12th, 1926. The E. Ingrham Company, Brietol, Comnecticut. Attentions- II. S. Ingehham. Dear ito understand that 3br. Ingraham is abroad and, therefore, we are addressing you personally. Inclosed herewith you will find an article entitled "Radio Active Material an Industrial Hazard?", by Dr. Jredorica B. Flinn, Ph. D., Assistaut Professor of Physiologi in Industrial Hygieno, College of Physicians and Surgeons, dolumbia University, which treats of the so called Fradium necrosis" or radiun poisoning cases. The investication by Dr. Fimm, which the basis of his article, has been by far the most thorough and far teaching worde undertation on this subjoct. This article will appeaz in one of the early issues of the Jowrnal of the Amorican Medios? Association. mille il seems that the charge of poisoning" eaused the desth of several girls (which chatrge wus widely advertised through the a for months ago) le entiraly unfounded, we naturally hesitato - wäthout further investigation de to malce the brond statement that radium in luninous material is unharmful, altholigh the believe this to be the caso. mataloro, in arder to be on the safe side, we caution you, if you have not alroady done so, to order your operators not to point thoir application broshos with their lipa- Thenever we zeceive any furthez Information on the subject, we shall be glad to pass it along to you. Yours very truly, President. CBLEE:OB Enclosure (1)