Letters Received to Mr. Lee [C.B. Lee], October 11, 1939

DRS. STEVENS, JARRE AND HASLEY 1429 DAVID WHITNEY BUILDING DETROIT ROLLIN H. STEVENS, M.D. RANDOLPH 4493 HANS A. JARRE, M.D. CLYDE K. HASLEY, M.D. EMIL M. SHEBESTA, M.D. October 11th-1939 U. S. Radium Corporation 535 Pearl Street New York, N. Y. Attention Mr. Lee entlemen: I met one of your representatives from Los Angeles (1 have mislaid his name) at our Detroit Rotary Club last week and learning his classification in the California Club 1 inquired about the cost of changing over some of my radium to larger denominations. He referred me to your Mr. C. B. Lee. What I have in mind is this: 1 have in the neighborhood of 48 mgs. in 2 mg. cells. These cells are of platinum iridium, have a wall thickness of .35 mm, a length of 13.1 mm and a dimeter of 1.29 mm. The radium contents vary of course with each fell from 1.5 to 1.9 mgs. 1 want all this changed over into four 10 mg. cells of platinum iridium which has a wall thickness of 1/2 mm. The length and diameter would have to be figured out accordingly. These tubes I want packed full so that the radium content will not slide around in different parts of the tube. I desire to use this radium particularly according to the method of Strandquist (Acta Radiologica P. l. Vol XX, Fasc. 1 #113 2/28/1939 and Vol XX, Fase 2, # 114, 4/29/1939 P. 186) of Stockholm Radiumhemet, his plan being based upon the work of Sievert of the same institution. The method of using this is described in two recent numbers of Acta Rdaiologica above referred to. I am planning to have made the glass carriers such as he used which are 4-1/2 nms. in hickness in all directions, the sides being round and a hole being made in the center just sufficiently large to carry the 10 mg. needles. These glass units can then be placed in one or two rows. The distanceof radium to the skin cannot vary. Thus, the dose can be figured out accurately in r units with the help of a series of tables which we would have printed. This makes for much more accurate dosage than anything we have had yet. I also have 21 mgs. in 3 mg. needles which have a wall thickness of about 0.15 mm and are platinum iridium. These would be added to the rest of the radium which would give me two additional needles as 1 have described and a few mgs. left over to which I might add enough radium to make another 10 mg. needle. 1 also have some 10 mg. needles in monel metal which I presume 1 would better change over to the platinum inasmuch as I could standardize my doses better with the 1/2 mm of platinum wall. I also have several 5 mg needles in platinum and in monel metal which I might consider changing